Found a 120 gallon, with stand, lights (basic lights), and maybe some filters...for $140-$150. Craig's List. However, the cross bar needs to be re-siliconed.
I wish that could even be an option for me! I think 55g is the biggest I could get away with and I think that would have to be after my son moves out hehe.
Anyhow, if you are confident that you could fix it and all it will take is a bit of silicone and you have room for it, I'd go for it. Might even be able to talk them down a bit since it needs repairs.
depends on what kind of filter?.... cuz if you bought it on craigslist.. and your looking to re- sell it, it'd probably have to come with a good canister filter...
i got my 150gal off of craigslist for only $75.00 cuz i talked the guy down, so you wouldn't want this happing to you.. lol..but if comes with a good canister filter, than i say go for it.. if not... then im unsure what advice to give...
However, the cross bar needs to be re-siliconed. 
