Old cases

Anyone know any websites that sell pretty old full tower cases for cheap? I'm looking for something that I can completely mod myself and I dont want to spend $80 on a newer, non-modded case. Powersupply not needed, either.

Ebay may be a start, cant think of any others at the moment though.

Try computer stores in your town - ones that built their own, etc...

I know the one I used to work for has a bunch of old stuff in their basement that I've considered "harvesting"