I deal in vintage electronics, primarily wristwatches. A gentleman buys a rather expensive watch ($500) off me, goes over the return and refund policies repeatedly. HE receives the item, writes me and says it arrived dead. I tell him to return for repair/replace - for a number of reasons it is quite obvious he has swapped the all-important insides with a broken one, the batteries aren't even the name brand I carry in my store. Understand I load these items with the batteries and set them personally before they are shipped. Rather than going through a chained death-match with him via Paypal, which I will inevitably lose, I am thinking about swindling the swindler with a working but mediocre guts. Karma, X-igion, ethics - make all arguments for why I will or will not burn in hell for this. Or is it incumbant upon me to reswindle as a strike back at the bad guy?