I can sell you one. The problem with getting the pre-assembled kits from Ultimachine is that they sell out of the PCBs before they can even get one put together. Let me know if you are interested, and I will PM you with my information.
I have them complete with Pololu Drivers and Arduino MEGA. There is a markup over Ultimachine's price. That's because I bought mine from them as well, so there are additional costs on my end.
Best,
-John-