Don't you mean that Netgear and Linksys 802.11g products are half the price of the AEBS? (And that's the version without a modem...)
Apple doesn't seem to do seasonal pricing. I think it's because they want to keep the "upscale" image, like Nieman-Marcus, Jaguar, and other such vendors. I also think it hurts their sales very badly. If Apple, as a company, want's to go beyond the small market percentage they have, and incidentally expand the love of the Mac to far more people, they need to be a lot less proud of their products-pricewise, anyway. I'd love to have my next college-bound friend or relative get a PowerBook for classes, but even with Apple financing, it's more cost effective for them to get a Dell laptop.