During the holiday season, retailers can change their prices multiple times a day. So how can you ensure you get the best price? Sometimes, you can't. But that's why mobile app Paribus was created. Eric Glyman is the co-founder and CEO of Paribus, and he joins Cheddar to explain how his app is helping consumers this holiday season. Paribus scans your online receipts to see if prices have changed, and then can immediately refund you the rebate. Paribus is free for consumers. In the past year, Paribus was acquired by Capital One. As part of the international brand, Paribus has been able to extend their offerings to work with mulitple retailers.