Flareon

The reverse holo version sits at £1.56 against just £0.20 for the plain printing—a sevenfold jump that reflects the collector appetite for the holo finish on this card. That's a substantial premium, so if you're holding the reverse, you've got decent value; if you're after one, the plain copy is worth considering if eye appeal isn't your priority.

• NotableThis reverse holo printing is 7.8× the plain one (£1.56 vs £0.20).