UltraBall Research
Data studies
Written reports on the Pokémon card market, each from a fixed window of UltraBall’s own data. The figures in a report never change once it is published; the live data pages carry the latest readings.
Data study · 15 Oct 2026
Auction or Buy It Now? What 900,000 Pokémon card sales say about how to sell
The same card in the same grade sold for a quarter less at auction than at a fixed price. The gap is widest on cheap cards and nearly closes above $2,500, and ending an auction on a Sunday made no difference to the price.
902,964 verified eBay US sales, 15 July to 12 October 2026
Data study · 15 Oct 2026
What a PSA 10 is worth: the grading premium by era, price and grading company
A PSA 10 sold for a median 16 times the ungraded price across 3,516 cards, from about 10× for modern cards to over 300× for Diamond & Pearl and Platinum. A CGC Gem Mint 10 sold for 38% of the same card’s PSA 10.
3,516 cards priced on 14 October 2026; graded sales 15 July to 12 October 2026