It's looking like the Pokemon gameshark thing (which I found out was called BrainBoy, I remembered the word brain was in it somewhere) is rare, too bad I don't have mine anymore. Gonna cost between $30 and $60 for me to get a new one
But I want one so that I can back up my Pokemon Red game in case its save ever gives out. Maybe I'd be better off with one of those USB game dumping things (I assume they make these for game boy at least, if nothing else because people use them for LSDJ and things)