Well it's pretty obvious that no one here is interested in it at the price you have it now. If you're so set on selling it, then why not price it competitively compared to other successful eBay auctions? The MOST they've gone for is about $75.. some as low as $40.
All you've done is continue relisting.. once for 99.. then for 89.. now you've raised your price back to 99 but claim free shipping...
How about letting it run as an auction, and if not that, set a buy it now that has at least some chance of being successful..