Re: 1911 gurus needed
If you can't take it down to nothing, and check to see what has been monkeyed with, I wouldn't spend over $500.
I would consider it a base gun to use for a build.
Who knows if the guy went and fit a new bushing at his kitchen table, hacked on the feedramp, put the slide in a vice to "tighten slide to frame fit" etc. If he "dropped in" a new hammer, that probably means you need to install new fire control parts.
If you don't know what to look for, and you can't take it to someone who knows before you buy it, then assume the worst (you're buying a frame and slide to send to a gunsmith).