eBay Store marketing SEO

We are looking for someone with lots of ebay marketing experience Our ebay store is: [login to view URL] We need to increase the traffic flow and conversion for sales We specialise in Steam Showers which you can see in our ebay store In the last 31 days we have only sold 4 steam showers In the last 90 days we have only sold 11 steam showers We used to be selling 20 steam showers per month and we need to get back to this level We also need to improve our Detailed Sellers Rating extremely ASAP in anyway possible LEGALLY within eBay rules we do not want to do anything against eBay rules or threaten our eBay business