I see them (120 gallon) pretty routinely for $75-$150. You can also check out propane businesses, some sell their old units but I've heard from some that the new homeland security regulations are making it harder.
Originally Posted by jeffturnerjr
Curious.... How much does a tank that size normally cost?
Weber 26.75 OTG w/CI grates & SJ/WSM Mini
Home built 24"x72" reverse flow stick burner trailer with 18"x40" grill w/CI grates and upright SS gas oven/smoker.
Home built 48" fire pit with a 30"x30" Santa Maria style ranch grill.
Home built lump charcoal retort, iGrill & a bunch of other cooking toys.