No definition of net, but 50% isn't bad for net. Three year contract. Tight focus to start with. So far so alright.
I'm assuming when they launch the website will be redesigned to sell to readers; it's a little spartan right now on any account. Competently written, at least.
Personally, I'm not a fan of publishers that use KDP. It ties them too tighly to Amazon to start with, and those first few months are vital when it comes to sales. It makes sense for self-published authors, but I'd rather see a publisher that gets me on Amazon, iBooks, Sony, Fictionwise, B&N and the rest as soon as the starter's pistol is fired.