I have dealt with quite a few members here buying/selling and trading and for the most part it has been with some of the more know members and I have had nothing but good things to say so far, but I did send something free to a newer member only to never hear from them until I inquired about it, he apologized then put a payment in my Paypal account for it, WTF lol it was free.
I try to let people I deal with that a part I may have bought or traded was received but sometimes it may take awhile ( a few days tops) if I am busy with something else at the time. I am broke 99.9% of the time and I always prefer the barter system when dealing with people when I can, for some of us it's not always about the money. I see so much that I could use in the trade thread but just never have what the other person needs to trade