I've recently bought two refurbished Acer C720 Chromebooks for $150 ea, one for me and one for a friend. I got them from the Acer store on Amazon. No defects noted.

It's very fast with 8 hr battery life. I hacked mine to run Fedora 20. I even have QEMU/KVM working with a virtual WinXP machine. It has 2 GB RAM and 16GB SSD so keep that in mind running full blown Linux.

As a general rule, if you can do it in the Chrome browser on a desktop, then you can do it on the Chromebook. They have a bit of local storage for pictures, etc.