I bought my 500 gallon tank new for $800-something. I'm in a rural area of NY. I get the lowest rate this way as long as it gets filled on an ad-hoc basis. Maybe twice a year.
Only slight problem is - I was thinking of changing gas companies and some of the big ones (Amerigas) said they would not fill it unless I could show proof of ownership. Well duh . . . it's on my property and I do NOT have a "title" for it like I do for cars and trucks. After buying a tank and having it for a few years - I'm not sure how someone is supposed to show proof unless the receipt has been saved.
I wonder how a person would react if he/she went t the local gas station to fill up a car and they refused to sell unless you showed proof you owned the car?