When I worked at Sara Lee, we negotiated a deal with Walmart that said we would not charge less in our retail outlets for our products than Walmart priced the same item. This, of course, caused the sales to plummet in our outlets. When we in retail complained to our sister divisions, their response was "Well, you sell less than Walmart". Well, DUH! You won't let us charge less than Walmart. Hello!!!? I imagine Walmart does this with our companies as well.
Sorry, I already knew that Wal-Mart. I choose to shop there anyway. If I can buy the same product for less, I will.