Mewtwo ex

This is a fresh set release—only 2 weeks old—and Mewtwo ex is already trading at £0.58, so expect downward pressure on price over the next few months given the typical three-month decline curve after launch. Stock is likely still flowing in, which will keep a lid on value until demand settles and supply tightens, so holding fire or buying small isn't unreasonable if you think the card has long-term legs.

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