OK, DD started to hit on it, you sent an envelope and expected to get it returned for free? Maybe I'm missing something here, but the way I read it, that is fraud. I could very well be wrong, something just doesn't pony up to the smell test though. Why would anyone expect free shipping back to them? I guess I'm confused? Whenever I have something sent return to sender I have always had to pay the return shipping to receive the item. Why is everyone bashing the customer? Please explain the transaction of mailing, I'm just not getting it. From what I read there was 2 mailing transactions, you shipped a bar tip to him, and he shipped a "different" bar tip "back" to you? Did you tell the customer to take it to the post office and put a return to sender label on there?