I have a couple of vintage bikes that the frames are a bit bigger than what I normally ride. I got them for around $30.00 Canadian each. One is a Miyata Seven Ten that I paid $30.00 CDN for because I wanted the wheels that had brand new never mounted tires. I made the mistake of riding it. Ditto for the others that I should sell.
$30.00 CDN Miyata Seven Ten.
Cheers