Lynn, thanks for the update! I picked up a 20CF bottle of argon/CO2 at lunch. The bottle was $80 and the gas was $25. I decided to purchase the 20CF bottle rather than lease a 40CF later. WestAir said they would credit me the purchase price later if I want to upgrade to a 40CF. Great guys. Also picked up a couple of 4 1/2" cutting disks for the angle grinder.