I'd be weary of the broken frame, especially after you add the substrate, hardscape, plants, etc. The frame somewhat (although to a very small extent) helps to keep the top of the glass from bowing out. Without that frame, you can end up with weak seams. Granted, that I don't know if it will happen for sure or not, but I would rather not take the risk: think of how long/how expensive a clean-up from a broken tank can get.
If it were me, and I were looking for another tank, I would check craigslist first.
Last edited by ngrubich; 11-15-2012 at 01:01 AM.