It's very satisfying when you get something awesome for next to nothing isn't it? Even if you have to repair/buy something else to go with it to get it working.
I remember only a few years ago I picked up a complete C64 system, from all places - eBay, for $2. It worked fine. When I picked it up and handed over the $2 the look was priceless - if only there was an emoticon for it!