Buying a propane tank is more than just the cost of the tank itself. When homeowners and businesses start researching propane tank prices, they often discover there are several factors that affect the total cost. Tank size is the biggest driver. Smaller tanks cost less upfront, while larger tanks come with a higher initial price but can lower your cost per gallon over time. Above-ground vs underground tanks also matter. Above-ground tanks are typically more affordable, while underground tanks re