Ultra Necrozma GX

The cheapest copy has been sat unsold for 7 days at £4.30, so you'll need to undercut it to shift one first. That £4.30 listing is flagged as HP condition though—a clean copy can ask considerably more. UK asks span from £4.30 to £11.90 with a median around £11.90, so the cheapest is a fair bit under the market, and UK sellers are generally asking 113% over Cardmarket rates across 8 active listings.

• NotableThe cheapest copy has sat unsold 7 days at £4.30. Undercut it to move first.
• CautionThe cheapest copy (£4.30) is flagged: graded HP by the classifier. A clean copy can ask more.
• NotableUK buyers pay 113% over Cardmarket for this card (8 sellers).
• NotableUK asks run from £4.30 to a £11.90 median; the cheapest is 64% under the middle.