Yep, you can get tanks and cages through CL for some awesome deals. You just have to be meticulous in cleaning.

And bleach does stink, but it also does more than just disinfect. I just got up, so I can't remember what the main thing it does is... but I know that new used enclosures should be soaked in a bleach solution, rinsed thoroughly, and then sprayed well with Chlorexidine. Wish I could remember...

And just toss out ANYTHING wooden or otherwise porous and clean the rest.

I have gotten two tanks off CL: One was a lesson in asking for good pictures and descriptions, because the tank was fine... but the screen top was crap and it was a slide/lock screen so I couldn't just replace it. But at least I got my first bag of Harlan Teklad aspen from that deal...so there was a perk.
The other tank was dirty, but perfectly sound in every way.