It's just too easy to back ut of on-line purchases since it's all basically anonomous. Without that FTF aspect there's no guilt with some. I can understand aggreing to a purchase and having a situation arise preventing it but let the other party know as soon as possible and be upfront and honest about it. I've yet to have any problems but am also careful as to who i deal with. There's definately some very good folks to deal with and unfortuneatly some very crooked and just plain worthless ones as well.
Shoot safe, shoot often