Criteria voor Best Match op eBay UK
Waarschijnlijk ook toepasselijk voor eBay.BE

There seems to be a perception that sorting by time ending soonest will go away. This is not true. Auctions will continue to be sorted by time ending soonest (after demoting the sellers with low DSRs), since this makes most sense for that format. However, there are other sorting criteria that are much more relevant for the fixed price format, such as price and popularity, since they reflect value to the buyer.

The details of exactly how the algorithm works can't be revealed mainly because it will evolve according to which mix of sorting criteria perform best for a particular category. In the same way that search engines frequently update their sorting algorithm, we will constantly be fine tuning it to ensure that the most relevant, good-value, and trusted fixed price items are given visibility.

As of Sept 25, Auction and BIN items will be sorted according to two different sets of criteria (time ending soonest and DSR scores for auction, and a mix of trust, value and popularity for BIN). Once the items for each format are sorted, the two separate lists are blended together based on buyer behaviour and can vary for category and query. However, importance will be placed on good DSRs, recent sales (in categories where multi quantity listing is prevalent), good value and relevant item titles.

Fixed Price: If you list an item with a quantity of 1 and sell it, you can then relist more of the same item within 7 days and you'll keep the recent sales rating (and improved placement in Best Match) from having sold it before. You need to use the relist button in order to retain your recent sales score. the Sell Similar will reset your score.

We also have a list of what BM does not take into account:
• seller status (private or business)
• seller’s total sold items
• postage costs being specified
• returns policy being specified
• feedback percentage
• item specifics
• total cost
• item description

http://www.tamebay.com/2008/09/best-match-whats-in-whats-out.html

Sleutelwoorden in de titel blijken ook heel belangrijk te zijn voor het sorteeralgoritme. Voor Engelstalige aanbiedingen kan men dit tooltje gebruiken om deze te optimaliseren (gebaseerd op de COM data):
http://labs.ebay.com/raghavgupta/demoto/to

Populariteit is net zoals op UK ook een sorteercriterium op eBay.FR voor vaste prijs aanbiedingen:

Popularity is the number of items sold from a multiple item listing over the preceding seven days; the score remains valid for seven days after the end of a listing. Listings which have sold more individual items will be advantaged in Best Match search sorting.

eBay give some advice for sellers to take advantage of this:

• sellers should list single multiple-item listings instead of running many listings just for one item
• sellers should relist sold items within seven days to take advantage of their established popularity
• sellers should use longer listings - 10 days - to gain greater visibility for their item
• sellers listing auctions needn’t make any change: their listings will continue to be sorted by ending soonest

http://www.tamebay.com/2008/10/ebay-france-include-popularity-in-best-match.html
French buyers, in comparison to their British counterparts, really do lack a sense of urgency
Dat is de Zuid-Europese mentaliteit, niet noodzakelijk slechter dan onze rat race, integendeel misschien. :^O