Most of your prices are simply too high. The Pony Express Corn Cob Pipe for example. These can still be bought new for about $4.50 from the manufacturer. The AA book generally sells for between four and six bucks.
Most clothing does not sell well when presented on hangers.
Firstly, find out at what price is this product being sold at, by the brand you bought.
Evaluate the condition of the product and how old is it. Electronic items being sold in a second hand or used condition dont usually fetch a very good price, as the customers are apprehensive of whether the product would work properly or not...as you are not giving them any guarantee, which is usually given with a new product.
Would be advisable to find out whether the product is working or not in the first place. I am not sure if you would be anyway be able to sell an used gadget on ebay. It would be better to try selling it to a second hand electronic dealer store in your area.
Outsource
your items are rare, so you need to have that one person who happens to be looking for that one item at just the right moment.
drop your prices, add free shipping, add more search terms.
http://www.ebay.com/sch/mrbst2u/m.html?item=221357931276&ssPageName=STRK%3AMESELX%3AIT&rt=nc&_trksid=p2047675.l2562
