I think you should also try doing an eBay completed listings search as well just to see how well this product is doing. Also you can try the following:
Check out the popular searches and most popular products on eBay:
Popular searches: Link hidden: Login to view
Best selling products: Link hidden: Login to view
If you can offer the exact same product at a slightly lower price than the rest, I guess you'll have a better chance at closing a deal.
All the best! :)