Arbok

This is a tricky one to price right now—there's nothing moving on the UK market in the last month, and no graded comps to work from either. Cardmarket is your only real benchmark, so you're relying on European asking prices to make sense of where £56.78 sits. That isolation from local activity means you could find it moves slower than you'd expect, or faster if a collector spots a gap in their binder.

• NotableNo UK listings or graded sales in the last 30 days. Cardmarket is the only reference.