Let me tell you about the one I let get away.
It was a '78 Peugeot I picked up around 1990 for $125. It was the guy's wife's ride to college. They were an older couple in a nicer neighborhood. The moped didn't run and he wanted to get it out of his garage, where it was always kept. It was like new except for dust and light rust on the rims, but it only had 750 or so miles on it. Owners manual and title included.
Like a fool I got it running and sold it for $200!
Deals like this pop up once in a blue moon.