Yes. Keep in mind those prices for the components are upgrades, the price difference they're charging between what you want and what the base model uses. I guarantee the price difference is greater than it is between the two parts on newegg, and that the base model parts were already significantly marked up. In addition, cyberpower will always use the parts from the lowest bidder, so quality isn't exactly assured. Upgrades are scary when using the cheapest power supply they could find for instance.
Just build your own, you WILL save money, especially in the long run, and even if you were to find it was more expensive, I guarantee the experience and the knowledge you gain in the process would have been worth the difference. It's a lot easier to diagnose some minor problem in the computer when you put it together, and know what everything is, and how it all fits together.