You spelt the brand Canon wrong in the item title. You where lucky to get any bids for your camera. As can be seen on the box in your photo. Canon is spelt with one "N" in the middle. You spelt it as Ca "NN' on.  You cant blame ebay if you title the item incorrectly so that it does not show in most peoples searches.

That important little nugget aside. The camera is available new on ebay for $689.00. You received $400 for a used item. Considering your typo, that is a pretty good result. And yes you paid a fee for the services you used, but none of us work for free do we ?.