Bought a 3.5 oz CO2 tank from him, he was very understanding and offered to return my money when USPS didn't deliver during the timeframe we thought they would. They DID wind up delivering and he is a terrific guy for offering to return my money.
I would recommend thebigcheese to anyone who asks, he was responsive and very fair. In the end I received my purchase and walked away feeling good about the entire transaction. Can't say enough good things!