Gyarados GX

The cheapest copy has been sitting unsold at £18.29 for 13 days, so undercut it if you want to shift stock first. That one's flagged as LP condition, mind you—a clean copy can ask more. Most of the market here is played material; a Near Mint copy is genuinely scarce and worth listing higher. UK asks range from £18.29 to £28.35 median, so there's room to work with depending on what you've got.

• NotableThe cheapest copy has sat unsold 13 days at £18.29. Undercut it to move first.
• CautionPSA 10 hasn't sold in two weeks. Don't pay to grade.
• CautionThe cheapest copy (£18.29) is flagged: graded LP by the classifier. A clean copy can ask more.
• Notable65% of the UK listings are played copies (15 of 23); a Near Mint copy is the scarce one.
• Notable2 of the last 4 PSA 10 sales were accepted offers, not asking price; leave room to negotiate.
• NotableUK asks run from £18.29 to a £28.35 median; the cheapest is 35% under the middle.
• Notable3rd most valuable card in Crimson Invasion (of 124 priced).