That's true that price is not the only factor to consider in staying visibly competitive on ebay. Have you heard of Link hidden: Login to view, ebay's search algorithm?
"Best Match results are determined according to a complicated search algorithm that is constantly changing. The best thing you can do is list your item for a competitive price, with reasonable shipping, and do your best to perform exceptionally as a seller in providing the best possible experience for your buyers, and you should be fine."
Best Match has been the default sorting method on eBay when anyone does a search. If you can fulfill the items mentioned you have higher chances of landing on the first page or first few pages of the search results.
Alice also has 3 quick tips to help you optimize your ebay listings in this Link hidden: Login to view
Hope this helps! Good luck :)