Snagged one of these a week or two ago when they were up here, same price.
I love it. The free 4g was as easy as popping in the SIM and clicking through a few pages. No hassle, no suffering, no credit card or anything. Nice.
The hardware feels fairly nice and solid. I ended up with the pink (Sorry, SALMON) color since the silver was sold out, and I'm pretty pleased with it. The finish is a rubbery matte which doesn't attract fingerprints, which is nice. The whole device is surprisingly heavier than I expected, though still loads lighter than my last laptop. The screen is bright and beautiful looking, even in direct sunlight. While the keyboard has a lot of funny-looking keys on it, the essential keys are in the right spots and I was able to quickly adjust to typing on it.
The HDMI port in mine wasn't working when I tried it... I need to do further testing to establish whether the issue is on my end or if I got a laptop with a bad HDMI port. Hopefully it works because this is one of the main attractions of the laptop (Netflix runs great!).
ChromeOS is tolerable. I would categorize myself as a fairly sophisticated user and I didn't find myself nearly as constricted by the operating system as I thought. The 4Gigs of RAM make this computer very snappy and responsive. Boot up time is fast, and it doesn't flinch when you open half a dozen tabs. I started to get slowdowns when I started loading it up with addons and crap, but this is reasonable for a $200 machine. I used chrome Remote Desktop to get into my home machine and that added a whole new level of utility to this little device.
I bought the laptop planning to install Linux on it. Flipped the computer into developer mode, which was relatively easy to do (I didn't have to open up the hardware to get into developer mode like I originally thought I would need to). From there, it was straightforward to install Arch Linux onto it and I was up and running in under an hour.
From there I'm back to a full-fledged operating system and all of the limitations of ChromeOS melt away. I have been using the Linux partition to play a PC game called Hearthstone over Wine, and it has no problems doing this. Even nicer, I can easily switch back to the Developer mode of Chrome OS anytime I need to just do some quick browsing.
Battery life is a bit of a toss up, it isn't as great as I expected but it's still something like 3-4 hours. I guess I had unrealistic expectations.
Overall very satisfied for the price. This fit the awkward niche in my life between smartphone and desktop and I will be using this laptop for a long time!