Even if you don't care about a few dollars, careless excess spending can drive prices up. I don't care, really, whether the box of macaroni and cheese I buy is

Even if you don't care about a few dollars, careless excess spending can drive prices up. I don't care, really, whether the box of macaroni and cheese I buy is $0.35 or $1.69. But I'll tend to buy the cheaper, just because I don't want to contribute to the success of the higher price point. It's my fight for the common man. All my efforts are completely negated when my wife goes shopping :(