Cracks me up when someone asks a simple question, then, instead of answers....they get questions...or irrelevant info. Who cares WHY some wants to know the deposit? I know I want to know. I live in the middle of nowhere, ran out of gas cooking, and wanted to know the deposit to have another tank. That way when I run out, I have plenty of time to get another bottle, instead of all cooking ceasing until I get more gas. Does that satisfy the people that instead of simply answering a legitimate question they ask questions ( a pet peeve)...?? Just answer the freaking question or don't say anything . So, for the person gracious enough to actually answer that question, I thank you.