If you were to have a quick browse on sites like AliExpress for Pokemon cards, you may come across a plethora of golden cards, often bundled into packs of 50 or more, and often very cheap
The row's are designed to be wider, to fit all graders, even loose cards
Or go to somewhere where you know they're just a reputable seller
As someone who spends her time in the wilderness and amongst beasts, Selvala should oppose this
And that is where basic market dynamics kick in: if on top of that the supply is low because it is a scarce card, if nobody wants to sell it, or if it had a single print run many years ago, then the price can skyrocket
Each Pokmon has certain attacks that it can use, and they may vary in damage & energy needed to use them