I read on another forum that Super Petz warehouse is supposed t have a $1 per gallon sale on their tanks. I'm not sure if it's in all locations, but contact the closest one near you. Unofortunately, the closest one for my (Illinois) would be Michigan, so I doubt I could take advantage of the sale, since the travel costs would probably be more compared to buying one locally at regular cost.
125 gal (473 liter):Low Tech (1.5wpg PC for 10 hours, no CO2/ferts, gravel substrate), Equipment (72" Coralife PC, Eheim Pro II 2128 w/built in heater, FilStar XP3 w/Hydor ETH201 inline heater), Fish (6*Discus, 2*Angel, 5*Clown loaches, 4*L-018 Gold Nugget pleco, 1*L-260 Queen Arabesque pleco, 7*Cories, Farlowella cat)
w000t! Just got a 75g for $75! My heart sunk when I walked in because the 75g in the front of the store I saw last time was gone, but they had another back in the fish dept, I said had in past tense, because it is now mine. w000t!
They were trying to upsell me to hell and back, but I only picked up a heater and glass top.