some people really suck. how hard is it to package and mail something you agreed to sell, and send them a tracking number!
i have had over 100 deals on RCU, and only 2 went bad. i didnt get taken, just the other person wasnt happy with the deal. i made it right with them.

i think there are some bad people who see the marketplace as a way to rip people off. unfortunately, in this world, you are bound to have a deal with a rotten apple.

maybe you will get lucky and the mail is just slow, and the guy is too busy to bother answering you emails. a simillar situation once happened to be. took forever but the package finally showed up.