Retailers must deal with frugal customers who grab deals and dash.

Why don’t aggregators compare prices of retail items like clothing? Because neither retailers nor shoppers really want them to.

Senior citizens get to purchase a host of goods and services at prices 10-20 percent lower than their under-5o counterparts. But commentator Lorie Eber says it's time for senior citizens give up their discounts.

Retailers make money by selling gift cards to be redeemed at other stores.

Who doesn't love a discount? Commentator Kristina Wong has benefited from group discounts on everything from meals to shoes to massages. But even she has a limit.