used tanks are rare around here just because hardly anyone around here has large tanks, a guy about an hour from here is selling his fishroom, tanks are 1$ a gallon, a couple 120gals and a bunch of 50,33,29,20,and 10s, most have never held water, thinking about buying a 120 and 3 or 4 50's, 50's to use as sumps on current tanks, do you think $1 a gallon is a good deal? all tanks come with glass tops and visatherm heaters.