A recent Consumer Reports study found that 66 percent of American consumers had haggled at least once in the preceding six months, with an 88 percent ka-ching rate on gadgets, clothes, furniture and steak. "People like this," Koehn said. "They are not going to go back to giving their money away. Why would they?" The recession merely popped the lid off a retailing shift that has been brewing for a decade. EBay gave millions of consumers dealmaking training wheels (. The Internet offers instant pricing data. And don’t forget Priceline, which lets consumers name their price for flights, hotels and rental cars. ShopSavvy is a shortcut: It converts the phone’s camera into a price scanner, delivering a live listing of competing prices as you stand in front of a coveted item. The app is downloaded once every second. And retailers are playing ball, paying the company to advertise better prices if a shopper is about to make a purchase from a competitor.