I called Gamestop and their 1GB sticks are $50 and their 2GB are $99. I just came back to 1.5 and am customizing my PSP. But I only have a 256MB stick. T_T. I have a DS...it sucks...so I though, why not trade it in. I was told I'd get $40 for it and $20 for New Super Mario Bros. That's a 1 GB right therer. I also have Animal Crossing, Yu-Gi-Oh! NT, Super Mario 64 DS, and Mario Kart. I didn't ask how much I'd get on those yet, but I'd have or almost have enought for a 2GB stick. But is it worth it for all this. What do you think I should do?