Professor Elm

Professor Elm is sitting idle at £12.99 while the set's moved up 5.6% in the last month, so the card itself hasn't kept pace. There's only one UK seller, asking £50.76 for a copy graded LP — that's a thin market, so you'll need to price firmly and expect a slower shift. The flagged condition on that listing suggests a clean copy could command more, but with just the one seller visible you're working with limited comparison points.

• CautionPrice hasn't moved in 45 days, while the set is up 5.6% over 30 days.
• CautionOnly 1 UK seller, cheapest at £50.76. Thin market: price firmly, expect a slow sale.
• CautionThe cheapest copy (£50.76) is flagged: graded LP by the classifier. A clean copy can ask more.