A free market.
Competitive stores vying for the same customers.
As long as the government stays out of things that's really all the economy needs to right itself.
(Well, that and no new taxes!)
There is a new Harris Teeter grocery store opening near my neighborhood. To draw attention and customers they sent out coupons in the mail. $10 off a purchase of $50 or more.
About a week later, Farm Fresh, with a store located a few blocks up the street from the new shopping center- sent out their own coupons with the exact same offer.
Government regulated? No.