Weepinbell

This regular printing sits at £0.08, while the Masterball variant is asking £12.15 — a stark 152× difference that tells you where the real demand lies. If you're moving stock, the regular copies will shift easily at bulk rates, but don't expect margins; the money's in tracking down that Masterball version if you can source it.

• NotableThe masterball printing is 152× this one (£12.15 vs £0.08).