NPD numbers reveal Apple's MacBook laptops account for about 20 percent of notebook sales at U.S. brick-and-mortal stores in June and July. The average Mac is a lot more expensive than the average PC and if you look at the notebook revenue, Apple scores 35 percent dollar share:
A fifth of store unit sales isn't anything to scoff at, and Apple's revenue share is even higher, at 35%. As Microsoft Watch points out, that means MacBook sales account for one out of every three dollars consumers spent on notebooks in U.S. retail stores. Of course, Apple does have much higher average selling prices than its competitors. Older NPD numbers suggest Mac laptops cost an average of $1,515 in June 2008, while Windows laptop prices averaged just $700.