when a company is willing to take a competitor's coupons, it is often referred to as a loss leader. same goes for the "beat any price" type of sales.
in other words, the store is willing to accept a small loss to encourage customers to come in to the store and hopefully buy other more profitable products, and to create customer loyalty.
The way that you wander is the way that you choose. The day that you tarry is the day that you lose.
Sunshine or thunder, a man will always wonder where the fair wind blows.