Offer your thoughts or opinion on the input financial query or topic using your financial background.

Do retailers ever stock goods just to make other goods sell better? 
They may stock items that frame the various price points. Of course they risk having the items go stale before they are sold. You also have situations where the store will advertise an item, but end up taking a loss on that sale because it will bring people in, and they will make other purchases. Determining what to stock, how to display it, and how to advertise it involves both math and psychology.