How did you ship it, via Flat Rate, First Class, or?
You have to be sure you have the right packaging for the right label, for example - only Flat Rate envelopes/boxes can be used for the 4.95$ flat rate label.
I know on eBay, you can "VOID" the label, and USPS will review it and refund you in a couple days. As of PayPal, You may need to ask a representative how to "void" that label for a refund (if it's not too late). I'm not sure how that works honestly since the package actualy was handled by USPS they may charge and not offer a refund.. If this is the case, I'd go to your local USPS and tell them what happened, and ask why it was not delivered (be sure to contact the buyer and get them to confirm the address is CORRECT). Sometimes the Local USPS will re-send it for you if you can't get a refund.
