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Priceonomics is the price guide for everything. Price guides are helpful for buying and selling used things. How much should I spend on this used bicycle on Craigslist? How much should I sell my stereo system for on eBay? Is this used Vespa a good deal, or what?

Shopular is changing the way people use their mobile phones to shop. Available on iPhone and Android, the innovative mobile app notifies users of personalized sales and coupons when they are near a store or mall. Shopular is the highest rated app in its category and ranked by Time Magazine among the 50 best iPhone apps of 2013. Shopular is founded by engineers from Google, Shopkick and Loopt . We are backed by Sequoia Capital and Y Combinator and headquartered in downtown Redwood City, minutes from Cal Train.