This keyboard it's amazing!! i switched back to mechanical keyboard with an horrible previous experience with a keyboard with blue switches.
got this one with red ones, definitely the type of switches i like the most.
IMO for the price it's a great deal i didn't had to pay custom costs (i'm in italy at the moment).
NB: I recived the keychron k2 version 2 wich is better than the version one, but the seller doesn't mention anything about the board version.

I found this keyboard through searching for wireless mechanical keyboard options and the Kickstarter campaign seemed pretty successful so I took a shot. I purchased the RGB aluminum frame with brown switches as a replacement for an old Razer board with green switches.

The overall build of this keyboard is good. I'm glad I purchased the aluminum one as I feel that the plastic one would have felt 'cheap'. The keyboard looks nice but the LEDs don't really shine through with this case design. That's not a bad thing, just something to note.
The keys feel good, but the key caps themselves aren't the best. They clack a lot when typing. I do tend to bottom out when I type, so your mileage may vary.
This keyboard is not reprogrammable with software aside from AutoHotkey which is a less than elegant solution.

I got excited when I first found it as it was going to be my first small form factor keyboard. The site originally said it would be shipped September 30th, but I received it on the 20th, so that was a plus. However, in my impatience I bought a Durgod Hades 68 from Amazon with the same Gateron Brown switches, and I feel like I was spoiled a little bit. The Keychron K2 typing experience isn't as enjoyable as on the Durgod. Add that to the shipping and customs fees I paid (it was shipped to Canada), and my total came out to around CAD$180, which almost makes me almost regret the purchase.

TLDR - Nice aluminum board, a bit clacky, RGBs are kind of dim, but theoretically a low price depending on where you are. If you want a wireless mechanical keyboard, I'd say go for it.