We have used Tractor Supply as a propane source when on the road. We have also learned that propane dealers usually have the lowest prices. About a week ago we filled at the Tractor Supply in Hurricane UT for $3.89/gallon. I went to refill today again at Tractor Supply but was unsuccessful because their meter was malfunctioning.
We found B&L Propane on the northern end of Hurricane in State Route 9. Their charge was $2.81 paid by a credit card and $2.71 cash.
Last week B&L would have been several miles further away than the Tractor Supply. Today, they were right on the highway on our return trip from Zion.