Goldeen

Most UK listings for this Goldeen are played copies—5 of 9 known—so a Near Mint one's harder to find. The regular printing at £1.77 sits well below the £4.72 median ask across the six UK sellers, with the cheapest listed at £2.27, a full 52% under the middle; if you want foil or reverse holo, expect to pay roughly 3.5× or 4× the regular price respectively.

• Notable56% of the UK listings are played copies (5 of 9); a Near Mint copy is the scarce one.
• NotableFoil sells at 3.5× the regular printing (£6.21 vs £1.77).
• NotableThe reverse holo printing is 4× this one (£7.06 vs £1.77).
• NotableUK asks run from £2.27 to a £4.72 median; the cheapest is 52% under the middle.