Last time we filled we got around 1.29 for first fill and then locked in a pre-buy at 1.39 I believe. Haven't called anyone lately, though... We're sitting on 300 gallons or so.
Best thing you can ever do is buy your own tank. Don't lease or rent the damn things. When you own your own tank you're free to shop around whoever, whenever you want. We've got a 1000-gal tank so when we find a deal, we capitalize on it.