I have 2 aluminum 50# C02 tanks..$250.00 each....Also have a280 cu ft Argon 100% for $280.00, 250 cu ft. 75 % Argon 25 % CO2 $280.00 Also have 280 Nitrogen ,Oxygen and acetylene. All tanks are full with good test dates and DOT stamps on them so 7 tanks total make offer for all of them...Moving must go.