Pikachu

This is a fresh release—only 18 days old—and you should expect prices to drift lower over the next few months as the market settles. Pokémon sets typically see falling values for the first three months after launch, so holding off or waiting for a dip might serve you better than buying in now at £1.68.

• CautionSet is 2 weeks old. Prices typically fall for the first three months after release.