There was an interesting article on this in The New York Times last Sunday. It was titled Even at Megastores, Hagglers Find No Price Is Set in Stone. Here is the intro:
"Shoppers are discovering an upside to the down economy. They are getting price breaks by reviving an age-old retail strategy: haggling. A bargaining culture once confined largely to car showrooms and jewelry stores is taking root in major stores like Best Buy, Circuit City and Home Depot, as well as mom-and-pop operations. Savvy consumers, empowered by the Internet and encouraged by a slowing economy, are finding that they can dicker on prices, not just on clearance items or big-ticket products like televisions but also on lower-cost goods like cameras, audio speakers, couches, rugs and even clothing. The change is not particularly overt, and most store policies on bargaining are informal. Some major retailers, however, are quietly telling their salespeople that negotiating is acceptable."