Piplup

That spike of +20.3% in a week looks sharp against the softer +8.7% monthly climb, so don't sleep on taking profit if you're holding one. The cheapest copy at £9.06 is flagged as MP condition, which explains why it's undercut—a clean Near Mint will fetch considerably more given that 73% of the nine UK listings are played copies. Prices have ranged from £7.14 to £8.60 over the month, but asks stretch from £9.06 all the way to £18.12, with the median sitting at £18.12, so there's real scatter in what sellers think this reverse holo is worth compared to the plain printing at £0.43.

• CautionJumped +20.3% in a week with no monthly trend (+8.7% over 30 days). Sell into it or wait for the pullback.
• CautionThe cheapest copy (£9.06) is flagged: graded MP by the classifier. A clean copy can ask more.
• Notable73% of the UK listings are played copies (8 of 11); a Near Mint copy is the scarce one.
• NotableAt a 30-day high of £8.60 (the low was £7.14).
• NotableThis reverse holo printing is 20× the plain one (£8.60 vs £0.43).
• NotableUK asks run from £9.06 to a £18.12 median; the cheapest is 50% under the middle.