Mr. Tea said:MrGatr and I made a trade recently, and a few minutes ago I received a profile comment that basically said he got a better offer and he was aware of backing out. Addresses were not exchanged, I just gave him mine.
6. "Backing out" or "Not sending":
a. "Backing out" of a trade is where both people have exchanged addresses, and then one trader decides for some reason they don't want to trade anymore. If you are caught doing this, you will receive a 3-week ban and a negative ref from the trader you backed out on. The ban may become permanent if do this a second or third time. A negative rep also will scar your trade record forever and can prevent you from getting verified seller permission. Backing out is very rude. When you agree to a trade, another trader is setting their cards aside for you, and waiting to send them out. Or in some cases, they may have already sent them, and you may have to send back. This is a very annoying ordeal to have to go through. So ask yourself before you back out of a trade with someone: "Is it worth a 3 week ban and a negative rep?"
If he never sent his address, the trade was not finalized. It is the wrong thing to do, but it is not punishable.