Tom's Disney Depot is located near the only Disney Distribution center in the world. Every item that Disney sells at their website generally passes through this center. I purchase brand new, authentic Disney pins, Disney pin sets, Disney limited Edition pins and pin sets, and Disney collectibles, all offered here. Some cast member pins are traded, and are not new in package: read the listing to be sure what you are buying!
I have been buying and selling on Ebay since 1999, with more than 1000 satisfied customers, and left Ebay as a Power Seller with 99% buyer satisfaction in 2008, maintained 99.5% in 2009, and 98% in 2010. You can be sure that you will get what you pay for, and get it in great condition, quickly. After all, that's what I would expect when I make a purchase.