I just bought a KBT pure, non pro, from Mechanicalkeyboards.com about 2 weeks ago.
The build quality is excellent IMO for what it is. I don't think that the switches are plate mounted, but instead PCB mounted. It's surprisingly light compared to what I expected, however it's very solid. I love the fact that it fits very comfortably under my hands and works well with my desk arrangemwents. Even though it's taken me a few weeks to get used to the fn access to keys like home, end and arrow keys, I don't miss having dedicated keys AT all and much prefer the smaller profile and more solid feel of the mechanical keyboard. There are several modes (like fn+space=switch 0 which turns rctrl,ralt,rshift,and rwin to arrow keys) that help me get by. I love everything about this board!