Gyarados GX

Don't pay to grade—PSA 10 hasn't shifted in a fortnight, and the premium over a 9 is brutal at 6× the value (£544 versus £90.59), so only crack the grader if you've got a flawless copy. Raw copies are moving steadily at 4.5 a week, hitting £50.01 as the median across 26 UK sales in the last 90 days, yet the cheapest ask sits at £29.82—39% under the middle of the range at £48.75. This card's the most valuable in Crimson Invasion and accounts for 14% of the set's entire value, so there's real demand underneath.

• CautionPSA 10 hasn't sold in two weeks. Don't pay to grade.
• CautionA PSA 10 is worth 6× a 9 (£544 vs £90.59); only grade a flawless copy.
• NotableRaw copies actually sell for £50.01 (26 UK sales in 90 days, latest £50.01 on 2 Oct); the cheapest ask is £29.82.
• NotableRaw copies sell about 4.5 times a week (9 sales in 14 days).
• NotableUK asks run from £29.82 to a £48.75 median; the cheapest is 39% under the middle.
• Notable1st most valuable card in Crimson Invasion (of 124 priced).
• NotableThis card is 14% of the set's total value (£323).