We are well above $4/gal for propane down here. I put in a tankless hot water heater a couple years ago thinking it would save me money on utilities and it has ended up being remarkably expensive.
That hurts. I paid $2.36/gallon for Amerigas in January and then learned that the local FS was $.90/gallon cheaper. I booted Amerigas on Monday of these week and switch to FS. Only have a 500 gallon tank but get a $.15/gallon discount for allowing them to auto fill the tank. They typically do this in the summer when the price is the lowest.