I haven't bothered to read through 11 pages of posts so let me address BenJerry directly:
I don't know how many transactions you have done in the past, but your conduct was deplorable. Firstly, you agreed to a ridiculous compromised form of payment that puts all the onus on you. At the very least, you should have taken his information and run a pre-auth beforehand to ensure mutually assured destruction. (If he doesn't pay, you run the card.) Then you shipped an expensive electronic item... without boxing it? Any good company takes the utmost care to box, using foam, bubble wrap, packing peanuts, stuffing with crumpled paper... UPS, USPS, Fedex EMS, all of these companies treat packages as if they were their own - and they were angry at it. Tossed, crushed, squished, shaking and rattling - the fact that it arrived broken was entirely your fault. Had I been the customer I would have sent it back immediately, and if you were a seller worth your salt you would have done an RMA or sent a call tag or paid for my shipping with a smile and an apology as due to my error the item arrived not as described. Any good seller insures their packages for the MSRP of the item, which costs a pittance in comparison to what would be lost if the item is damaged in route. Once the buyer was faced with this destroyed piece of gear, he had the option. He chose to hold off until he could ascertain the warranty and cost of a fix. The fact that he chose to send them back is within his rights and something I would have done right away. Before he came to this decision he was pestered every seven minutes (look at the time stamps) with increasingly hysterical accusatory and inflammatory messages, only cementing yourself as a terrible seller. The only way you could have done this worse would have been if you made him pay first and then never sent the item. You are one step away from being that guy.
If, on the other hand, the buyer never sends the item back and never pays, then he is the scammer and you are the scammed.