Terribly sorry this happened to you guys
A good thumping is in order but he is not worth getting in trouble over.
Lesson learned. Take a good look at anybody listing parts for sale, new member, find out if he has a good rep on other forums, call him (seldom will they take a call which is another tip off) look up the address on Google, look up his user name, name given, us a credit card instead of Paypal funds, costs a bit more, generally better to just not take the chance.
I have shipped tens of thousands of business orders and bought and sold hundreds if not thousands of car parts, learned to be careful a very long time ago. Only ripped off twice ever, many years back.