That may be true for many people, but not for me. I've just bought a 13.3" laptop that fits in the inner pocket of my jacket, weighs 1.4 kg. and has an i5 cpu. Perfect for carrying on to a plane without touching my hand luggage allowance, has twice as many usb ports as I need to unload camera cards and send to remote online backup, powerfull enough to do some photo editing if I so choose, and light enough to carry around when I feel like it. A regular laptop simply wouldn't fulfill my requirements, which is why originally I was going to pick up a netbook.
Price discounts are probably as much to do with clearing out sandybridge processor models, making room for windows 8 touch enabled devices, and the fact that drg is still somewhere in the retail desert... having said that dell currently have 5% cashback, with 15% voucher, and until yesterday an xbox 360 thrown in....