Looking at the items you have sold, there is no other platform which will give you the exposure you need for sales in greater volume than eBay. Although sales across eBay have not been great from some time, I think this is down to economic conditions, as much as eBay itself. There just isn't much spare money floating around, and you products do represent "luxury purchases", which just aren't happening at the moment.
You could investigate special interest groups on FB or elsewhere, but you stock may a little "mainstream" for such outlets.