[quote name='Deadpool']Wow i didn't know people were dumb enough to send stuff without getting payment first.[/QUOTE]
You don't send first to a PO box, ever. I don't ship to PO boxes, period. I certainly would never ship first on cash deal, I don't care if its Bill Gates himself. I hope you get your money back and I hope you learn from this.
When you do a cash deal, it goes, they pay, you ship, in that order. If they pay, and you don't ship, then there are dispute resolution options through Paypal, or their credit card company, and they can get their money back. If you ship, and they don't pay, you have to go through the legal system. The buyer is more protected in this situation than the seller. I noticed the agreed payment method was a money order, don't do that either. Forged money orders are gaining popularity. If you absolutely must, accept Postal Money Orders only, and they pay first, no exceptions. If you're sent a Postal Money Order, and you don't ship, its postal fraud, but its much harder to get the money back than Paypal.
I would encourage you to use Paypal in these situations, you expose yourself, and the customer, to less risk. If they won't pay first, then don't do the deal. If you don't have any feedback, and you're trying to sell $200 of stuff, do smaller deals with reputable people to build up your feedback first. Never, ever, ever do what you did, not for me, not for someone you think you know, not for anyone. What you did is quite possibly the worst thing anyone could ever do in any trading/selling situation. Get your money back, learn from the experience, and never do this again.