Should I be upset?

I learned my lesson about unhappy buyers, (I actually sent it for free and he screwed me on the shipping anyway) I still haven't recieved a nickle!
The next item i sell will be packed in a black box like the airline recorders, and lots of before and after pics too.
Paypal only for me after this adventure, and no squawks or excuses.
When someone doesn't respond or try to sort out the problem with you in p.m.'s you know he's at fault.
Live and learn.
I've recieved a few items i bought on here with no issue, but i guess there's still a few bad apples who don't get it.
Thanks to the FABO members here who police this stuff through their threads and opinions. Especially Paul (Greenhornet) who has helped me a lot.
I lol at the "when good parts go bad" comment earlier!
This is not intended to be a rant, or a thread hijack, just a heads up to buyers and sellers!
Let's all get along and enjoy the a body hobby the best we can.
Guys, resolve all issues before it gets to this!
I think we're pretty damn reasonable people here overall.
O.P. lick your wounds and get on with it, and seller, man up and be more professional.
Tom.