How much is a full 20 lb propane tank?

A 20-pound propane tank costs approximately $14 to $20. The refill rate will depend upon the cost – those changes with time due to this economy – which now is $3 to $4 per gallon. However, the price can vary wildly depending upon the area you’re buying the tank. A Full 20-pound propane tank can cost from $50 to $100 in some regions.