It certainly looks like it. They introduced Promoted Listings some time ago and here's how it works. Sellers can elect to pay an additional percentage of the sale to get their items promoted to the top of the list in searches and other areas.
An example is Mad Max 2 daybills
The highest price daybill on ebay is at the top of the list and it also appears in various promoted searches. The lowest price daybill for the same film gets far less exposure.
Some sellers are massively inflating the price of their items to cover the cost of getting their listings promoted over similar items. ebay are happy when promoted listings sell because they get much more in commission.
However, I would have thought that eBay's philosophy was to be competitive on prices in the marketplace but promoted listings only serves to push buyers in to higher priced listings.