Everybody loves a bargain, but at what cost? If you spend your time driving around from store to store in search the best deals in town, the deal you were chasing really won't be a deal once you've added up the time and money spent on gas in pursing it. That's why it's much smarter to take advantage of ad matching or price matching programs available at retailers like Walmart and London Drugs. Shopping under one roof is much more economical in the long run.