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PSA 10 · Gem Mint · Gyarados

Gyarados PSA 10 Prices & Population

UltraBall tracks 58 English Gyarados cards, 54 of them with a PSA 10 price. In the 90 days to Oct 3, 2026, PSA's sales record shows 578 Gyarados PSA 10 sales worth $650,417, across the 44 cards it has sales for. PSA 10s run from $33.95 (Gyarados 22/78, Pokémon GO) to $85,000 (1st Edition Shining Gyarados 65/64, Neo Revelation).

Prices as of Oct 15, 2026. Sales on PSA's record through Oct 3, 2026. PSA population counts as PSA publishes them.

Gyarados cards tracked
58
With a PSA 10 price
54
PSA 10 population
29,854
PSA graded, all grades
139,156
Median gem rate (100+ graded)
13%
PSA 10 sales, 90 days
578
PSA 10 sales value, 90 days
$650,417
Median PSA 10 price
$1,113
Median PSA 10 over raw
25×
Most valuable PSA 10
$85,000
1st Edition Shining Gyarados 65/64, Neo Revelation

Ranked by PSA 10 price

Most valuable Gyarados PSA 10s

  1. 1st Edition Shining Gyarados 65/64, Neo Revelation

    1. 1st Edition Shining Gyarados 65/64

    Neo Revelation

    $85,000

    PSA 9
    $8,500
    Raw
    $2,463
    PSA 10 pop
    –
    Gem rate
    –
    Sold 90d
    –
  2. Gyarados ☆ δ 102/110, Holon Phantoms

    2. Gyarados ☆ δ 102/110

    Holon Phantoms

    $80,520

    PSA 9
    $36,000
    Raw
    $6,404
    PSA 10 pop
    37
    Gem rate
    1.7%
    Sold 90d
    0
  3. Gyarados H10, Skyridge

    3. Gyarados H10

    Skyridge

    $78,000

    PSA 9
    $7,000
    Raw
    $1,665
    PSA 10 pop
    137
    Gem rate
    10%
    Sold 90d
    7
  4. 1st Edition Gyarados 6/102, Base Set

    4. 1st Edition Gyarados 6/102

    Base Set

    $48,000

    PSA 9
    $5,520
    Raw
    $600
    PSA 10 pop
    –
    Gem rate
    –
    Sold 90d
    –
  5. Gyarados 4/123, HeartGold & SoulSilver

    5. Gyarados 4/123

    HeartGold & SoulSilver

    $45,600

    PSA 9
    $1,485
    Raw
    $34.99
    PSA 10 pop
    4
    Gem rate
    1.7%
    Sold 90d
    0
  6. Shining Gyarados 65/64, Neo Revelation

    6. Shining Gyarados 65/64

    Neo Revelation

    $26,400

    PSA 9
    $3,460
    Raw
    $952
    PSA 10 pop
    118
    Gem rate
    1.4%
    Sold 90d
    –
  7. Gyarados ex 109/112, FireRed & LeafGreen

    7. Gyarados ex 109/112

    FireRed & LeafGreen

    $26,250

    PSA 9
    $2,850
    Raw
    $413
    PSA 10 pop
    154
    Gem rate
    9.8%
    Sold 90d
    9
  8. Shadowless Gyarados 6/102, Base Set

    8. Shadowless Gyarados 6/102

    Base Set

    $25,800

    PSA 9
    $660
    Raw
    –
    PSA 10 pop
    –
    Gem rate
    –
    Sold 90d
    –
  9. Gyarados 7/95, Call of Legends

    9. Gyarados 7/95

    Call of Legends

    $25,011

    PSA 9
    $4,680
    Raw
    $99.99
    PSA 10 pop
    18
    Gem rate
    3.1%
    Sold 90d
    1
  10. Gyarados 8/107, Deoxys

    10. Gyarados 8/107

    Deoxys

    $17,301

    PSA 9
    $703
    Raw
    $122
    PSA 10 pop
    20
    Gem rate
    3.4%
    Sold 90d
    1
  11. Gyarados XY109, XY Black Star Promos

    11. Gyarados XY109

    XY Black Star Promos

    $10,000

    PSA 9
    $1,100
    Raw
    $88.94
    PSA 10 pop
    30
    Gem rate
    4.4%
    Sold 90d
    1
  12. Gyarados 12/110, Legendary Collection

    12. Gyarados 12/110

    Legendary Collection

    $10,000

    PSA 9
    $500
    Raw
    $45.16
    PSA 10 pop
    35
    Gem rate
    4.2%
    Sold 90d
    3

Easiest Gyarados to gem

Highest PSA 10 rate, cards with 100+ PSA graded

CardPSA 10sGradedGem rate
Gyarados VMAX 207/203Evolving Skies2,7673,80173%
Gyarados VMAX 29/203Evolving Skies1,3102,02165%
Dark Gyarados 8/25Celebrations: Classic Collection8,03112,42365%
Gyarados-GX 16/68Hidden Fates2,2413,70760%
Gyarados 7/34Pokémon TCG Classic - Blastoise6841,20657%
Gyarados V 171/203Evolving Skies54198755%
Gyarados-GX SM212SM Black Star Promos3,1687,10745%
Gyarados ex 225/198Scarlet & Violet2,3885,56943%
Gyarados ex 45/198Scarlet & Violet6641,55143%
Gyarados-GX 18/111Crimson Invasion4391,17137%

Hardest Gyarados to gem

Lowest PSA 10 rate, cards with 100+ PSA graded

CardPSA 10sGradedGem rate
Gyarados XY60XY Black Star Promos26280.32%
Shining Gyarados 65/64Neo Revelation1188,4101.4%
Gyarados ☆ δ 102/110Holon Phantoms372,2381.7%
Gyarados 4/123HeartGold & SoulSilver42361.7%
Gyarados 123/123HeartGold & SoulSilver126771.8%
Gyarados 7/130Base Set 2814,3781.9%
Giovanni's Gyarados 5/132Gym Challenge693,6511.9%
Gyarados 6/102Base Set53325,2832.1%
Dark Gyarados 8/82Team Rocket1064,3332.4%
Gyarados 7/95Call of Legends185773.1%

Gem rate is the share of PSA-graded copies that came back a 10. A rate off a handful of copies says more about who sent them in than about the card, so these two lists only count cards with at least 100 graded. The median Gyarados card on them gems at 13%.

Rarest PSA 10 populations

Lowest-pop Gyarados PSA 10s

CardPSA 10sGradedGem ratePSA 10Low because
Gyarados XY60XY Black Star Promos26280.32%$4,491Hard to grade
Gyarados 24/124Dragons Exalted3397.7%$870Few sent in
Gyarados 4/123HeartGold & SoulSilver42361.7%$45,600Hard to grade
Gyarados 19/100Stormfront6639.5%$150Few sent in
Gyarados 23/83Generations86512%$130Few sent in
Gyarados G 30/127Platinum95018%$269Few sent in
Gyarados 123/123HeartGold & SoulSilver126771.8%$6,700Hard to grade
Gyarados 7/95Call of Legends185773.1%$25,011Hard to grade
Gyarados 8/107Deoxys205833.4%$17,301Hard to grade
Gyarados 6/16Pokémon Rumble235724.0%$9,000Hard to grade

A low population is not the same as a hard card. “Few sent in” means few copies have been graded at all, or they gem at a normal rate; “Hard to grade” means at least 100 have been graded and they come back a 10 at under half the median Gyarados rate.

Most graded Gyarados cards

What collectors send to PSA most

CardGradedPSA 10sPSA 9sGem rate
Gyarados 6/102Base Set25,2835334,4952.1%
Dark Gyarados 8/25Celebrations: Classic Collection12,4238,0313,98665%
Gyarados-EX 123/122BREAKpoint9,5891,5052,91116%
Shining Gyarados 65/64Neo Revelation8,4101181,0081.4%
Gyarados-GX SM212SM Black Star Promos7,1073,1682,82145%
Gyarados 34/108Evolutions6,0823193,9365.2%
Gyarados ex 225/198Scarlet & Violet5,5692,3882,48543%
Gyarados 7/130Base Set 24,378818901.9%
Dark Gyarados 8/82Team Rocket4,3331069112.4%
M Gyarados-EX 115/122BREAKpoint3,9788181,34621%

Big population, thin trading

100+ PSA 10s, fewest PSA 10 sales for their population

CardPSA 10sSold 90dPSA 10
Gyarados ex 45/198Scarlet & Violet6649$50.00
Dark Gyarados 8/25Celebrations: Classic Collection8,031129$72.00
Gyarados ex 225/198Scarlet & Violet2,38843$120
Gyarados VMAX 207/203Evolving Skies2,76754$148
Gyarados-GX 112/111Crimson Invasion65213$730
Gyarados 21/98Ancient Origins1493$3,400
Gyarados-GX 16/68Hidden Fates2,24147$113
Gyarados VMAX 29/203Evolving Skies1,31032$125
Gyarados-GX 18/111Crimson Invasion43911$736
Gyarados 7/34Pokémon TCG Classic - Blastoise68418$129

Biggest PSA 10 premium over raw

PSA 10 price over the raw near-mint price, both at least $5

CardRawPSA 10Premium
Gyarados 4/123HeartGold & SoulSilver$34.99$45,6001,303×
Gyarados 34/108Evolutions$8.51$2,150253×
Gyarados 7/95Call of Legends$99.99$25,011250×
Gyarados 12/110Legendary Collection$45.16$10,000221×
Gyarados 7/130Base Set 2$32.00$5,375168×
Gyarados 8/107Deoxys$122$17,301141×
Gyarados XY109XY Black Star Promos$88.94$10,000112×
Gyarados-EX 26/122BREAKpoint$24.99$2,13085×
1st Edition Gyarados 6/102Base Set$600$48,00080×
Gyarados 6/102Base Set$43.00$3,12073×

Where the jump from 9 to 10 is widest

PSA 10 price over the PSA 9 price

CardPSA 9PSA 10GapPremiumGem rate
Gyarados 34/108Evolutions$40.00$2,150$2,11054×5.2%
Shadowless Gyarados 6/102Base Set$660$25,800$25,14039×–
Gyarados 4/123HeartGold & SoulSilver$1,485$45,600$44,11531×1.7%
Gyarados-EX 26/122BREAKpoint$80.00$2,130$2,05027×9.6%
Gyarados 8/107Deoxys$703$17,301$16,59825×3.4%
Gyarados-EX 114/122BREAKpoint$228$4,920$4,69222×18%
Gyarados 7/130Base Set 2$260$5,375$5,11521×1.9%
Gyarados 12/110Legendary Collection$500$10,000$9,50020×4.2%
Gyarados 24/124Dragons Exalted$45.89$870$82419×7.7%
Misty's Gyarados 13/132Gym Challenge$409$6,000$5,59115×4.2%

Most actively traded

The Gyarados PSA 10s that change hands most

CardSold 30dSold 90d90d value90d medianLatest sale
Dark Gyarados 8/25Celebrations: Classic Collection40129$11,861$90.00$87.00 Oct 3, 2026, eBay
Gyarados VMAX 207/203Evolving Skies1654$7,974$146$145 Oct 3, 2026, eBay
Gyarados-GX 16/68Hidden Fates947$5,182$96.79$92.59 Oct 2, 2026, eBay
Gyarados ex 225/198Scarlet & Violet943$5,609$131$115 Oct 3, 2026, eBay
Gyarados VMAX 29/203Evolving Skies1032$3,320$100$115 Oct 1, 2026, eBay
M Gyarados-EX 115/122BREAKpoint530$49,965$1,624$2,150 Oct 2, 2026, eBay
Gyarados-EX XY106XY Black Star Promos723$18,837$740$1,225 Oct 3, 2026, eBay
Gyarados 34/108Evolutions1022$19,936$545$2,150 Oct 1, 2026, eBay
Gyarados-EX 114/122BREAKpoint720$37,206$1,786$2,449 Sep 30, 2026, eBay
Gyarados 7/34Pokémon TCG Classic - Blastoise718$2,276$129$106 Sep 30, 2026, eBay

Cert-linked PSA 10 sales on PSA's record, each one slab: eBay, Fanatics Collect, Goldin and Heritage, plus reported auction results PSA's record misses. It runs about ten days behind, so the 30-day count is low for the newest days.

Recent verified PSA 10 sales

The newest Gyarados PSA 10 sales

Through Oct 3, 2026

By era

Gyarados PSA 10s, era by era

CardsOne of eachPSA 10sPSA gradedMedian gem rateSold 90d90d valueTop PSA 10
Wizards of the Coast17$313,0851,41953,3653.3%36$209,1131st Edition Shining Gyarados 65/64 $85,000
EX6$131,7674106,9357.0%23$196,855Gyarados ☆ δ 102/110 $80,520
Diamond & Pearl1$150663–––Gyarados 19/100 $150
Platinum2$9,269326224.0%––Gyarados 6/16 $9,000
HeartGold & SoulSilver3$77,311341,4901.8%1$25,011Gyarados 4/123 $45,600
Black & White1$870339–––Gyarados 24/124 $870
XY11$36,6213,95930,49810%106$153,314Gyarados XY109 $10,000
Sun & Moon7$3,0007,01915,74034%87$29,178Gyarados-GX 18/111 $736
Sword & Shield7$77112,86720,02355%238$26,208Gyarados V 171/203 $164
Scarlet & Violet6$7694,0129,95740%87$10,738Gyarados 43/193 $230

By set

The sets that lead Gyarados's PSA 10 market

Top 15 by 90-day PSA 10 sales value

CardsOne of eachPSA 10sPSA gradedMedian gem rateSold 90d90d valueTop PSA 10
Skyridge2$80,0002671,79119%14$139,746Gyarados H10 $78,000
FireRed & LeafGreen1$26,2501541,5739.8%9$123,090Gyarados ex 109/112 $26,250
BREAKpoint5$15,2253,10318,76216%57$95,241Gyarados-EX 114/122 $4,920
Holon Phantoms2$86,6061204,1663.0%7$51,207Gyarados ☆ δ 102/110 $80,520
XY Black Star Promos3$15,7163802,9084.4%24$28,837Gyarados XY109 $10,000
Gym Challenge4$21,8782347,5383.1%7$26,0861st Edition Giovanni's Gyarados 5/132 $6,950
Call of Legends1$25,011185773.1%1$25,011Gyarados 7/95 $25,011
Crimson Invasion3$1,9911,5074,35734%35$21,445Gyarados-GX 18/111 $736
Evolutions1$2,1503196,0825.2%22$19,936Gyarados 34/108 $2,150
Deoxys1$17,301205833.4%1$17,301Gyarados 8/107 $17,301
Legendary Collection1$10,000358354.2%3$16,500Gyarados 12/110 $10,000
Base Set 21$5,375814,3781.9%4$15,480Gyarados 7/130 $5,375
Evolving Skies4$5824,7437,17860%109$14,347Gyarados V 171/203 $164
Celebrations: Classic Collection1$72.008,03112,42365%129$11,861Dark Gyarados 8/25 $72.00
Team Rocket4$7,5121515,1304.0%8$11,3011st Edition Dark Gyarados 8/82 $4,300

Every card

Every Gyarados PSA 10

54 cards, 7 1st Edition / Shadowless

61 of 61
1st Edition Shining Gyarados 65/64Neo Revelation2001$2,463$8,500$85,000––––––35×10×
Gyarados ☆ δ 102/110Holon Phantoms2006$6,404$36,000$80,520372,2381.7%000.0%13×2.2×
Gyarados H10Skyridge2003$1,665$7,000$78,0001371,30510%07+65.9%47×11×
1st Edition Gyarados 6/102Base Set1999$600$5,520$48,000––––––80×8.7×
Gyarados 4/123HeartGold & SoulSilver2010$34.99$1,485$45,60042361.7%00+10130.0%1303×31×
Shining Gyarados 65/64Neo Revelation2001$952$3,460$26,4001188,4101.4%––0.0%28×7.6×
Gyarados ex 109/112FireRed & LeafGreen2004$413$2,850$26,2501541,5739.8%29+20.2%64×9.2×
Shadowless Gyarados 6/102Base Set1999–$660$25,800–––––––39×
Gyarados 7/95Call of Legends2011$99.99$4,680$25,011185773.1%01+29.7%250×5.3×
Gyarados 8/107Deoxys2005$122$703$17,301205833.4%11+174.6%141×25×
Gyarados XY109XY Black Star Promos2013$88.94$1,100$10,000306854.4%11+126.0%112×9.1×
Gyarados 12/110Legendary Collection2002$45.16$500$10,000358354.2%03+29.8%221×20×
Gyarados 6/16Pokémon Rumble2009$361$4,951$9,000235724.0%00+13.5%25×1.8×
1st Edition Giovanni's Gyarados 5/132Gym Challenge2000$300$949$6,950––––––23×7.3×
Gyarados 123/123HeartGold & SoulSilver2010$350$6,500$6,700126771.8%00+1.2%19×1.0×
1st Edition Misty's Gyarados 13/132Gym Challenge2000$381$995$6,366––––––17×6.4×
Gyarados δ 8/110Holon Phantoms2006$350$1,740$6,086831,9284.3%17-23.3%17×3.5×
Misty's Gyarados 13/132Gym Challenge2000$135$409$6,0001653,8874.2%56+51.3%44×15×
Gyarados 7/130Base Set 22000$32.00$260$5,375814,3781.9%24+45.6%168×21×
Gyarados-EX 114/122BREAKpoint2016$77.99$228$4,9205603,09318%720+60.8%63×22×
Gyarados XY60XY Black Star Promos2013$499$2,500$4,49126280.32%–––9.0×1.8×
1st Edition Dark Gyarados 8/82Team Rocket2000$168$561$4,300––––––26×7.7×
Gyarados-EX 123/122BREAKpoint2016$200$520$4,2901,5059,58916%––+3.2%21×8.3×
Gyarados 21/98Ancient Origins2015$66.40$350$3,4001492,6815.6%03+5.3%51×9.7×
Gyarados 6/102Base Set1999$43.00$284$3,12053325,2832.1%––-4.6%73×11×
Giovanni's Gyarados 5/132Gym Challenge2000$142$429$2,562693,6511.9%010.0%18×6.0×
Gyarados 34/108Evolutions2016$8.51$40.00$2,1503196,0825.2%1022+164.6%253×54×
Gyarados-EX 26/122BREAKpoint2016$24.99$80.00$2,130656799.6%01+14.9%85×27×
Dark Gyarados 8/82Team Rocket2000$65.00$171$2,0271064,3332.4%17+55.9%31×12×
M Gyarados-EX 115/122BREAKpoint2016$98.80$208$2,0008183,97821%530+52.6%20×9.6×
Gyarados 11/144Skyridge2003$270$575$2,00013048627%67+21.6%7.4×3.5×
M Gyarados-EX 27/122BREAKpoint2016$34.90$130$1,8851551,42311%26+34.4%54×15×
Gyarados-EX XY106XY Black Star Promos2013$23.61$125$1,2253481,59522%723+7.2%52×9.8×
Dark Gyarados 36/109Team Rocket Returns2004$40.00$186$1,0006441515%24+31.6%25×5.4×
Gyarados 24/124Dragons Exalted2012$3.17$45.89$8703397.7%00––19×
1st Edition Dark Gyarados 25/82Team Rocket2000$30.00$210$775––––––26×3.7×
Gyarados-GX 18/111Crimson Invasion2017$20.00$92.80$7364391,17137%611+7.5%37×7.9×
Gyarados-GX 112/111Crimson Invasion2017$75.00$125$7306521,97833%213+0.6%9.7×5.8×
Gyarados 32/97Dragon2003$20.00$130$6105219826%12+1.5%31×4.7×
Gyarados-GX 101/111Crimson Invasion2017$28.49$54.00$5254161,20834%111-4.2%18×9.7×
Dark Gyarados 25/82Team Rocket2000$19.95$46.00$410457975.6%01+1.2%21×8.9×
Gyarados 30/181Team Up2019$11.99$75.00$4065520627%03+13.0%34×5.4×
Gyarados 33/147Burning Shadows2017$23.60$57.00$3754836313%120.0%16×6.6×
Gyarados G 30/127Platinum2009$12.95$94.00$26995018%––+60.4%21×2.9×
Gyarados 43/193Paldea Evolved2023$0.36$40.00$2303831312%13+47.0%–5.8×
Gyarados V 171/203Evolving Skies2021$18.70$40.00$16454198755%816-3.4%8.8×4.1×
Gyarados 19/100Stormfront2008$19.00$60.00$1506639.5%––0.0%7.9×2.5×
Gyarados VMAX 207/203Evolving Skies2021$36.00$56.58$1482,7673,80173%1654+7.2%4.1×2.6×
Gyarados V 28/203Evolving Skies2021$2.49$35.00$14512536934%17+44.0%–4.1×
Gyarados 23/83Generations2016$1.13$31.92$13086512%––0.0%–4.1×
Misty's Gyarados 49/182Destined Rivals2025$0.91$23.00$1309392410%110-1.9%–5.7×
Gyarados 7/34Pokémon TCG Classic - Blastoise2023$16.08$53.41$1296841,20657%718+3.2%8.0×2.4×
Gyarados VMAX 29/203Evolving Skies2021$8.49$40.00$1251,3102,02165%1032+6.6%15×3.1×
Gyarados ex 225/198Scarlet & Violet2023$8.73$36.00$1202,3885,56943%943-0.4%14×3.3×
Gyarados-GX SM212SM Black Star Promos2017$3.19$25.00$1153,1687,10745%––-4.4%–4.6×
Gyarados-GX 16/68Hidden Fates2019$6.95$30.00$1132,2413,70760%947-3.6%16×3.8×
Gyarados 130/1651512023$0.36$15.00$11014539437%14-12.9%–7.3×
Gyarados 40/192Rebel Clash2020$1.36–$83.004315628%––+50.3%––
Dark Gyarados 8/25Celebrations: Classic Collection2021$5.26$30.00$72.008,03112,42365%40129-3.1%14×2.4×
Gyarados ex 45/198Scarlet & Violet2023$1.76$7.00$50.006641,55143%19-23.1%–7.1×
Gyarados 22/78Pokémon GO2022$0.51$22.20$33.955026619%––0.0%–1.5×

Gem rate from 20 PSA-graded copies. 30d move is the PSA 10 price over 28 days. Premiums need both prices at $5 or more. 1st Edition and Shadowless printings are their own rows, with their own prices and PSA counts; PSA's sales record is kept per card, so they show no sales count.

Cite these figures

UltraBall tracks 54 Gyarados cards with a PSA 10 price, with a combined PSA 10 population of 29,854. Across the 51 Gyarados cards with at least 100 PSA-graded copies, the median gem rate is 13%. PSA's sales record shows 578 Gyarados PSA 10 sales worth $650,417 in the 90 days to Oct 3, 2026, across the 44 of those cards it has sales for.

Source: UltraBall, ultraball.com/pokemon/gyarados/psa-10, observed Oct 15, 2026. Sample: every English Gyarados card UltraBall tracks (58); populations from PSA's population report; sales from PSA's cert-linked sales record. Method below.

How these figures are made

Population
PSA's population report for each card, as PSA publishes it. Copies sent in, not copies in existence.
Gem rate
PSA 10s over every PSA-graded copy. Shown from 20 graded; ranked, and used in medians, from 100.
Prices
UltraBall's PSA 10, PSA 9 and raw near-mint prices, the same as each card page shows. A price leaves out sales far from the rest.
Sales
Cert-linked PSA 10 sales: each tied to one slab by its PSA certificate number, so a sale is this card at this grade. The record has sales for 44 of the 58 Gyarados cards; the rest show “–”, not zero. 30 and 90 days count back from the newest sale on the record.
Matching
Raw and graded figures are for the same card; a 1st Edition or Shadowless printing is kept apart from the Unlimited card.
Liquidity
PSA 10 sales in 30 days over live listings; days of supply is live listings over the average daily sales.

The full UltraBall methodology

More on Gyarados and PSA grading

Common questions

What is the most expensive Gyarados PSA 10?

1st Edition Shining Gyarados 65/64 from Neo Revelation, at about $85,000 in PSA 10. Next is Gyarados ☆ δ 102/110 (Holon Phantoms) at $80,520.

How many Gyarados PSA 10s are there?

PSA has graded 29,854 Gyarados cards a 10, out of 139,156 Gyarados cards it has graded in all, across the 58 cards UltraBall tracks. Gyarados 6/102 (Base Set) is the most graded, at 25,283 copies.

Which Gyarados card is hardest to grade PSA 10?

Of the Gyarados cards with at least 100 copies graded, Gyarados XY60 (XY Black Star Promos) has the lowest gem rate: 0.32% of 628 came back a 10.

Which Gyarados has the lowest PSA 10 population?

Gyarados XY60 (XY Black Star Promos), with 2 PSA 10s out of 628 graded. Copies rarely come back a 10.

What is the easiest Gyarados to gem?

Gyarados VMAX 207/203 (Evolving Skies): 73% of its 3,801 PSA-graded copies came back a 10, the highest of the Gyarados cards with at least 100 graded.

How much more is a Gyarados PSA 10 worth than a raw copy?

Across the Gyarados cards with both prices, the median PSA 10 sells for 25× the raw near-mint price. The widest gap is Gyarados 4/123 (HeartGold & SoulSilver), 1,303×.