The problem is the CPU's. The Core i3-4430 is nearly double the price of the A6-6400K, and the Intel-compatible motherboard costs $15 more than the AMD one. The GPU price difference is actually just $50. CyberPowerPC will be able to save on parts by ordering in bulk, but it appears that they will not be making much money on the $499 model. Building your own costs $550. They can make more of a profit on the $699 one, which is $20 more than what it would cost to build your own.