If you are worried of others, the dealer is your only solid choice. I wouldn't have a problem buying one on ebay as long as it's: a US seller, 100% functional, near 100% feedback seller, seller offers warranty or returns. Paypal/ebay protect the buyer much better than seller. I don't think you have to worry.
2014 Durango Limited AWD in Granite: Premium Package, 2nd Row Captain Chairs, 2nd row Console.