How do marketing techniques help maximise sales?

What are some tips to sell iPhone covers on eBay? Methods to attract traffic and sales with minimal cost. And any other cost saving tips/tricks.

• iPhone covers have already been established on websites like eBay. Are there ways to still attract crowd and achieve high sales over a short span of time? Are there are marketing techniques other than buying eBay's bold headline, etc. If possible, I would like to know the same for Gmarket as well. Any other tips/tricks would help as well, be it big or small.

• Answer:

  Here are some tips: First, people will see how many iphone covers you have sold. So get your friends to buy some from you, have them write positive remarks of the iphone cover, which you`ll pay back for the cost later. Another way, is get your feedback at least 500+. You can do this by buying legitmate small value items .01 - paper clips etc. After your feedback established, use ebay templates to appeal your listing, and edit your main item photos stating: "30% off".