How many times have you been ripped of in a car or parts deal???

Got screwed over a time or two in the past, when i sold parts on ebay.
One "buyer" put in a complaint that i send him and empty box, and no parts.
I had the postal receipt that stated package weighed in at XXXX pound, and if i sent an empty box, would only weigh a very few ounces.
Pay Pal sided with the buyer, and the seller, me, got screwed out of 75 dollars, that they took out of my account.