15 ways stores trick you into spending - MSN Money

15 ways stores trick you into spending - MSN Money: "Ever notice how you can go to a store to pick up just one thing and then, by the time you get to the check stand, you have five or six things in your cart and a bigger bill than you had anticipated?

This happens over and over because department stores use an array of techniques (grocery stores use many of the same tactics) to get you to pick up these items. By itself, each technique isn't very strong -- it's the use of them in combination that is powerful."