Well most comps now can run PS games plenty fine with an emulator. I had an old Athlon XP with an FX5200 gfx card play FF7 and things fine. There are plenty of emulators that allow you to play PS games straight from the PS disk in your DVD drive. The only thing to buy is an adapter for the controller or buy a PC gamepad, most gamepads for PC look identical or close to the PS controller and most even have the rumble feature. Also with a PS emulator, your memory cards are only limited by how much space you have on your comp. and since a PS mem card is wut? 1MB at most?
I really dont think you're gonna sell that for $40