I'm not sure, actually. I haven't gone out and purchases something for a lot but I have a ton of cards and old stuff which could possibly be worth something. Cool thing is I got most of it for free from my step-siblings at the time, so if I ever sell it for anything it's already a profit
I'm not sure if they're actually worth anything but I have the cards of shiny Raikou and shiny Entei. Yeah no idea if they're worth thêm than a couple of bucks, but hey. Shiny legendaries are cool cards to have, right? XD