Goodwill can be a source for decent cameras, but not always. My first "big" find was a Minolta X-700 with the standard 50, an Albinar 28mm macro (which is surprisingly good), a Sigma 70-210, and one of the dedicated flashes for the X-series. I had to look all over the store, as these parts were scattered on the shelves. Total price was $10. The camera didn't work at first, but after I had gotten a replacement body, I dove into it and found a chunk of something blocking a lever in the bottom, and that solved its problems.
And what got me into LTM territory was a Yashica YF that could use some repair. Even if I pay to send it to Mark Hama, I'll still come out ahead of the buying and repair costs ($130 + ~$300). I'd fix it myself, but there are parts missing or destroyed, and Mark should be able to replace them. But I never thought I'd find a YF in this area, considering there were only between 7k and 10k ever made, most of which were sold in the home market.
So yeah, I still swing into the parking lot whenever I come up on a Goodwill.
PF