I did it! I just did it! After weeks of ruminating over whether to buy a Chromebook, I found one on Amazon for $200--brand new--and bought it.
It's the same model Nick has, Acer C7 C710-2847. I've never bought a computer from an individual before on Amazon, but I read Amazon's info and its A-to-Z guarantee applies for third party sales.
For another $42 I added a 3-year Square Trade warranty. I almost never buy extended warranties, but what the heck.