Walmart is getting sued over claims that the big box retailer is taking advantage of consumers by implementing deceptive grocery pricing practices. A federal appeals court ruled July 3 that Walmart must face these claims in a class-action lawsuit against the retailer. Plaintiff Yoram Kahn alleged that Walmart’s small price discrepancies “add up,” and take advantage of consumers. Kahn claimed that the marked prices on the shelves for items he was paying for differed from what he was charged for those same items at check out. “Kahn alleges that Walmart is aware of these discrepancies between she…