I got this keyboard from qtan's group buy, but I have another keyboard on order so decided not to keep this one. It's been out of it's box for less than an hour, so basically brand new. Includes all original packaging. I tested NKRO in AquaKeyTest and it is indeed NKRO via USB.
The only other mech board I have is a Leopold Tenkeyless w/ Browns, so I don't have a lot to compare to, but I would say that it is obvious that Leopold has better build quality than PLU. This makes sense, because Leopold is more expensive. My only issue with the PLU board is that the stabilizers for the spacebar are pretty poor and it makes a rattling/pinging sound when pressed. Not a huge deal, but some people might care. Other than that, it is a solid board that is great to type and/or game on.
Pictures!
http://imgur.com/a/56ZjoI apologize for the quality of the pictures, all I had on hand was my iPhone.
I am asking $100 (via PayPal) shipped to the continental U.S. From TX. Sorry, no international shipping.
Sorry I haven't responded to PM's. I will get to them shortly in the order I received them!
EDIT: Damnit, didn't notice the typo in the title. The keyboard is the PLU ML-G3000, not 300. I apologize for any confusion.
EDIT 2: Added more information and pictures