More at
http://bits.blogs.nytimes.com/2011/06/16/a-site-for-figuring-out-the-cheapest-time-to-make-a-purchase/

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A new start-up, Shopobot, helps shoppers track prices and decide when to buy, starting with consumer electronics and videogames. Shopobot opened to the public Thursday [16th Jun] with an undisclosed amount of funding from Google Ventures and AOL Ventures.
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