But did you just read my post?
Yes it is to note negative experience. But stuff like yours is not even a big deal. He said he was very busy, so its up to you to be polite and wait if you want to buy from him. If you think you are in the right to give him a -. Then he is in by all means in the right to - you.
Just take it easy man. Wonder how many '-'s you may of given if you were part of the props canada order. Damn...
I, and as well as others think you are in the wrong for doing so.
Next time wait until the transaction is done. I could see if you sent money, and you got nothing deffinatley give a negative. If not, then chill a bit dude. And if he is taking too long, just drop it and find another seller.
Never bite the hand that feeds you.