I have only had one case in which I didn't receive a product I purchased
on EBay and it occurred from a company called the Natural Barn.

I purchased 2 bottles of Glucofast through EBay on 09-05-2006. I
received email notification of a backorder on 09-15-2006 and then
received the wrong item, Digesterol, on 09-26-2006. I was then asked to
pay to ship the Digesterol back to the Natural Barn, which I did. I
received USPS notification that the item was delivered at 9:52 am on
October 16, 2006 in NEBO, KY 42441. I emailed the Natural Barn again via
EBay on 10-24-2006 using the address asking
for an update on the shipment of the Glucofast. I was then told to send
my request to another email address, When I
logged onto EBay to file a complaint, I discovered that the Natural Barn
had removed itself as an active member of EBay. When I tried to complain
to PayPal, the Natural Barn has also removed themselves as a member of
PayPal so I had no recourse. I recently found their website and are
have made a complaint to the Better Business Bureau but I think other
buyers who may go the Natural Barn to purchase supplements should be
aware of this company. The owner has no problem stealing money from
customers and not delivering the products that he sells.