Got burned by a member, should I out him????

A member here has thus far burned me for a part I sold and shipped to him. I have sent several pm's asking to be paid, no responce.

The sum of money is not great, less than $20.00(part and including shipping). To me, it's the principle of the matter; he wanted a part, I had it, he ageed to the price, he wanted it ASAP, I mailed it USPS flat rate priority envolope.

Out him, or what?

Thanks,

Jim Burch