EBay Inc. (Nasdaq EBAY) has purchased Decide.com for an undisclosed price.

Seattle-based Decide.com develops software that advises web users about the best time to buy  product categories. The deal is expected to improve eBay’s pricing tool, which is designed to aid sellers in valuing merchandise. As part of the deal, the Decide.com service will shut down on Sept. 30.

Decide. com has raised $17 million in venture capital from Madrona Venture Group, Maveron, Vulcan Capital and other angel investors.

San Jose, Calif.-based eBay, which won Mergers & Acquisitions’ 2011 “Strategic Buyer of the Year” award, has been expanding services through M&A over the past few years. 

For more on the auctioneer website’s strategy, see “The Buyside: eBay's Top Dealmaker Outlines M&A Strategy.”  

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