1990 Grand Am Stereo

Any idea where I can find a stereo for my 90 Grand Am? I'm not looking to spend a few hundred bucks on a new aftermarket system. I'd just like to find a used oem radio/casette. I've looked online and can't seem to locate anything. Any suppliers anyone would know about? Thanks.

One thought is local salvage yard, some treat them rather highly $$, but in my area all day for $50, the better AM/FM Cassettes with auto-stop, eq's, etc.

I have had good luck, especially by pulling my own [but be careful, plug the pulled unit into your harness first and try it out, sort of caveat emptor with no return from most yards].