This article is from the Macintosh for sale FAQ, by Elliotte Rusty Harold firstname.lastname@example.org with numerous contributions by others.
Apple does not sell Macs retail except to their largest
accounts. They occasionally sell discounted Macs to certain
developers but like educational discounts, developer's discounts
aren't what they used to be. Most developers agree that the
paperwork and delays involved in buying direct aren't worth any
small savings that might be had by buying from Apple rather than
from a dealer.