I plan on selling some of my TFers to make room for new ones, but I'm somewhat of an eBay selling n00b. I'll probably be sending most items via USPS priority mail since I believe PayPal requires you to use delivery confirmation in case of a dispute. You must use USPS priority boxes for this correct? I know you can order these boxes online and have them sent to you at no cost, but does anybody know if you go to a post office and pick them up personally? Any shipping suggestions would be greatly appreciated!