In the pictures, the frets look fine. I would definitely see how many owners, how long has he had it, etcetera. I think you'll find the sound to be pretty thick and beefy once you set it up the way you want it. The tremolo would be the big question to me. Innocently ask if he has used it. IF he says he doesn't use it when he plays, tune the guitar and give it a couple of Hendrix bends to see if it will stay it tune. It should return to pitch after abuse, and be set up approximately 4 mm off the body, and parallel to it. Pitch should rise a half step when going up, and go down as far as you care to. If the strings are old, you won't be able to tell anything. So ask him to put on a new set before you get there, or bring your preferred gauge. Good luck, and I think the price is pretty good. Let us know what happens.