ishihara pokemon trading card game Incredibly rare of CEO sells for over $240,000! | 8-Bit Eric Goldin | The Global Go-To

This graph shows only the last year, and her early price was above $40, trended down a little, then bumped back up to $30ish before reaching her current spot just above $10

She appears once in a Grixis deck focused on sticking Splinter Twin on Psychic Frog

For the absolute basics, a deck is made up of 60 cards, and it cant contain more than four copies of the same card (except for basic energy cards)

Im not saying this to scare you guys off from buying cards on eBay because it can be a good place to find deals, especially when you bid on an item you want, but you just have to be a bit more knowledgeable and cautious when buying Pokmon cards on eBay