I bought one of those exact same displays from Parts-Express over a year ago (for $149), stuck it in a project case from Fry's (tight fit), and it still works great.
I dug it up and hooked it up to my WSP, and it's alright. I wouldn't expect to read a text screen on it, though. It just doesn't have the pixels. I'd guess it's 320x240 or so.
It's not as thin as it looks in the picture. It's the screen sandwiched with the NTSC controller board.
Overall, I'd buy their $199 5" LCD instead.. all packaged and ready-to-use. Mine should arrive soon.