Ahh...if you scroll all the way down to "other options" right before the screen goes from white to blue at the very bottom of the page there is a "report this item" which will take you to a set of drop down menus describing various possible problems with the item. When you get to the one you want there will be a link to report the item - for which you'll need the item number.

The relevant link in this case seems to be http://pages.ebay.com/help/policies/replica-counterfeit.html

I wonder how many people have to report it before EBAY leaps to take it down? I know they will eventually, but they haven't yet.