eBay announced today a new Price Match Guarantee for over 50,000 items across its site -- promising that it will have the best deal online, or it will match the lowest price of a competitor. While only select items are available for this offer, "the move is a significant effort on eBay's part to ensure that it doesn't lose customers to Amazon, Walmart and other online stores as the market consolidates behind the industry's major players," reports TechCrunch. From the report: In order to qualify, the item must be one of the new, unopened items sold daily through eBay Deals, for starters. Deals are eBay's selection of "trending" inventory across all its categories -- like consumer electronics, home & garden, and fashion. The deals are also generally offered at 20 percent to 90 percent off, and are sourced from over 900 of eBay's trusted sellers. These sellers include both smaller merchants looking to grow their customer base as well as major consumer brands. At any time, eBay says there are "tens of thousands" of items offered through the Deals site, with featured deals updating at least once per day, beginning at 8 AM PT.