Angel investor Nat Burgess was concerned that retailers see Paribus as a nuisance – a money losing proposition even. But Glyman said his company actually drives purchases. 

"The abandoned shopping cart problem is huge. Most consumers, they see something, they add it to their cart, but they don't make the final purchase. With Paribus you have no more fears about missing a better deal," Glyman said. "When you get a few dollars back, you realize, 'I'm going to shop at Amazon or Macy's every single time, because I trust this store."

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