I read here about somebody who got his AE-1 for $50! Lucky I guess. I've seen one which has very few scratches by the hinges. Looked good, but I don't know if it is in good condition though. It's sold by the local photo shop here and they ask $189. 1. Is that a reasonable price? 2. How do I know if it is working properly (what do I look/listen for)? Thank you all! PS. They also have an F-1 in there. Are they good? How much should they cost? That one looks almost mint!