A long time ago I read a book called "The 22 Immutable Laws of Marketing" [1] and one of them was don't get caught up with couponing (i.e. sales). They are like drugs: they quickly increase revenue, but now you are dependent on them to get revenue. I like how this exec thinks. (I also like how they'll round up prices to the nearest dollar)
[1] http://www.amazon.com/22-Immutable-Laws-Marketing-Violate/dp... (not an affiliate link)