Martini, Yea I actually just got back from a trade center who sells Pokémon cards. Bought a ton of out-of-print Booster packs from him. You should try and start a collection for some of your favorites. Maybe start with Crobat (I like that one a lot!), and try to collect all the English printings of that card. Most of the time, I end up buying the cards I want. It's hard to find someone willing to trade old cards like Crystal Crobat. It's a lot of fun scouring eBay though for great deals on the cards you like.