Basically, you get to double the number of goblins you control whenever you tap Krenko
With all those cards entering rotation, prices have begun to level out as demand for some decreased while other cards jumped up in value as players learned of new strategies and combos
What would happen is that you have different classes/tiers of vintage and, yeah, the current vintage stuff will dry up eventually
"Pair accused of bringing weapons to Pokemon World Championships last year to appear in court Monday"
For example you could start with a Build & Battle Kit which includes a 40 card deck and booster packs to build your deck, and eventually get Level 3 theme deck like the popular Mew VMAX League Deck
The power curve in the Sword and Shield era was getting so intense that if The Pokmon Company introduced a card more powerful than the mighty VSTAR, it would probably need to have 500HP and award four prize cards in order to be balanced