The makeup and card pool of the format changed several times before finally taking what is (more or less) its current form in July 1997 (with one core set and two blocks forming the Standard format)
This cap is somewhere around $70 or $75, which is the normal wholesale price of a booster box, although the actual expected value typically ends up closer to $50 or $60, depending on the set
Crystal Barricade $11.16 This wall is a problem if you manage to put together a deck with multiples
Tinsel Holofoil cards are also reintroduced with the release of these sets
It makes the port to Vintage Cube well, where it has synergies with fetches and other land sac outlets
Just make sure to get three energy cards on this card before you move it to the active Pokemon spot so you can attack right away, but even if you don't, it does have above average hp and a very low retreat cost