^^^In regards to Jules2702's post here is the information as listed on EBay. The placement she is describing refers to the "Best Match" search.
Best Match update: We're continuing to refine and improve the technology for surfacing the most relevant, best-quality listings from sellers providing the best buyer experience at the top of search results—and give you the information and tools you need to get the best possible exposure for your listings.
Listing performance score for Fixed Price—Impressions count: When only a few people view a Fixed Price listing and the item is snapped up quickly, it's a fair indication that the listing is more relevant to those who see it than a listing with thousands of impressions and no sales.
That's why in the improved Best Match, Fixed Price listings will have a listing performance score based on the listing's recent sales in relation to the number of recent impressions it received. An "impression" is any time a buyer sees a search results page that includes the listing.
For example, in the new Best Match, a listing with 100 recent impressions and 10 recent sales will score higher than a similar listing with 1,000 recent impressions and 10 recent sales.
This listing performance score will be a more accurate measure of how buyers perceive a listing's relevance than recent sales alone.
New multi-quantity and single-quantity Fixed Price listings will be given exposure in Best Match even though they have no sales history. These listings will be given a certain number of initial impressions based on the performance scores of similar listings. This change will improve the exposure of new Fixed Price listings that are relevant to buyers.
Titles count. Relevant titles will be more important than ever in getting the best position for Fixed Price listings. Since a good listing performance score is basically a close ratio between your impressions and sales, in some situations a title that is too general could bring you a short-term gain in impressions, but end up giving your listing a lower listing performance score.
Seller performance counts: Top-rated sellers will get promoted in Best Match for Fixed Price listings on eBay.com. Sellers not meeting the
new minimum standard will be demoted for both Auction-style and Fixed Price listings. On eBay.ca, listings will continue to be eligible for demotion or promotion in search according to current criteria.
Shipping counts: As always, shipping costs are considered. Keeping costs reasonable and offering free shipping continue to be best practices. Fixed Price listings with free shipping will continue to receive added exposure. Auction-style and Fixed Price listings with excessive shipping will be demoted.
Auction-style listings will continue to receive a boost in search results when they're about to end. Given the improvements in the way new and single-quantity Fixed Price listings are treated, and the
new guidelines for Auction-style listings with Buy It Now, it will be even more important for sellers to use Auction-style listings the way they work best—with a low start price to attract buyers and stimulate bidding. Some sellers may see significant fee savings by moving Auction-style with Buy It Now inventory to Fixed Price.
Optimized by category: To make sure the most relevant inventory from the best sellers surfaces on top of search results, there may be variations by category in Best Match.
No one "silver bullet." Many factors are considered in Best Match and can vary with different circumstances. But the bottom line
best practices for optimizing your position in Best Match will be the same. List in the right format and the right categories, write accurate and relevant titles, offer good prices and reasonable shipping and provide good service.