Both iOS devices and Macs seem to be impervious to the discount
game. In fact it’s so rare to find a significant price variance
between retailers that, when it does happen, the event usually
draws considerable press coverage.
With so many laws regulating competition among retailers, how does
Apple pull off this amazing feat? It turns out that the company
uses a fairly straightforward strategy, known as price
maintenance, that takes advantage of the popularity of its
products and exploits a quirk in the way retailers are allowed to
advertise their merchandise.