How much does helium cost?
Depending on the grade helium you are looking for the cost will vary. If you are looking for helium to use for inflating balloons you can get a canister for about $20 for about 9 cubic feet at Wal-Mart, SAMS, K-Mart or Costco. Helium is also used in welding in which you would need to buy a larger supply which could cost in the range of $150-$225.