Generally anything below what we are selling it for on Dishstore is stolen Merchandise. My margins are so thin on some of these receivers that if I went on ebay, the listing and paypal fees would eat up any profit left in the sale and I would be at a loss.
But if you can save $50 going through Ebay, in todays economy thats great. Granted alot of people don't care if the merchandise they are buying off ebay is stolen, and if your dealing with a seller who deals in stolen merchandise you run a higher chance of not receiving your item.
As the paypal protection, I have gotten burned as both a buyer and as a seller. As a seller the best you can do is ship to a confirmed address and get a signature, as a buyer you should fund the transaction with a credit card. If you don't get the item, screw going through Paypals buyer protection policy, call your credit card company and dispute the charge.
As far as used equipment, with DISH Networks new customer privacy policy its harder than ever to get them to transfer it from one account to the other. You will literally need to do a 3-way call with both account holders to transfer the equipment from one account to the other.