We get our from a guy out of Mi 100.00 refundable lease on the 60# bottle. 140.00 to fill it with a 15.00 delivery charge to our door. He only charge you for 50pounds cause you can't get 60#s in one of them tanks with the air. Calls every Monday to see if you need a new bottle.. I've never heated the 60# bottle no reason to. Just freeze your 2-2.5 bottle and it will fill it. I use a scale from habor freight..