guys that weld with c02/argon mix

I'm getting ready to buy one from a local supplier, I can just take the tank in and pick up a new tank. I believe he told me 115 bucks, 20-25 for a refill.

Of course when I get ready to pull the trigger I will ask again on the test thing to make sure it doesn't cost me. If that's the case I'll probably just lease it.