Slowpoke & Psyduck GX

A PSA 10 currently sells for about £656.16, raw the card sits at £123.36 — 5.3× as much. Of 4.568 copies already graded, 38 % received a 10 and 42 % a 9. Mathematically, submitting returns £345.64 on average, before fees and shipping. Rule of thumb: submit when the value at a realistic grade is at least double the raw value — which is the case here. Centering decides it: an off-centre card will not get a 10. The grade distribution comes from the PSA Population Report; people pre-sort before submitting, so your own hit rate may differ.

Across 124 auctions the median was £74.63, across 349 fixed-price sales £84.24. Fixed price therefore fetched about 13 % more — for this card patience with a set price is the better route.

Half of all sales fell between £57.81 and £91.08, with a median of £74.09. Selling fast lands you nearer the lower end; with patience, good photos and a complete title the upper end is achievable.

The cheapest genuine sales were around £43.19. Offers well below £25.92 are typically fakes, mislabelled cards or a different variant — ask for photos of all four borders and a close-up of the surface.

From real sales: English £96.16 (454), Italian £89.19 (16), German £56.17 (16). English fetches about 71 % more.

lastsold uses only real sales — eBay plus auction houses like Goldin & Fanatics — recent sales count more (recency weighting), outliers and fakes are removed. It's not an estimate but actual sold prices, separated by condition, language and grading.