Hey everybody, I've decided to sell or trade my collection of 4gb pro-duos. I went crazy and bought 5 of them for 90 bucks a pop months back. Back when I was planning on emulating the hell out of my psp, but I grew out of the stage. So I'm just simply looking to get 50-60 bucks for each, or if anything, I'll do a mass guide trade if anyone wants to do that as well. They are the official Sony ones, and I just don't have any intentions of using them, so feel free to send me a PM if your interested.