To follow up on some of your comments about this...
Yeah I know, Suburban is consistently at the high end of prices. They have no other hidden fees though, and the high prices cover the tank 'rental'. I've run the numbers many times, and still stick with them since I can't justify the cost of buying a tank just to get potentially lower priced propane. It's a 500 gallon tank. I get it topped off no more than once per year, so the 250 gallons I'm getting now will last me until this time next year. They allow me to keep the larger tank (after some tough discussion) since my drive requires them to back in, winding up a curvy grade, which most propane places tell me they will not do if there is any ice or snow. So I can't chance running out during a bad stretch of winter, and the larger tank gives me some insurance in case my wood heat or electric heat pump fail. I think some day I will make a change and probably buy a tank, but for now I put up with Suburban.