Thanks to the great stencils cut by Ponoko it was fairly quick to assemble and thankfully worked first time. While it's a very simple board, it's still been interesting putting it together.
I am not sure exactly how I'm going to sell these, assuming I work out anyone wishes to buy them That'll be the next step of the plan!
Below is the competed board plugged into the tiniest breadboard I have around. I think it makes it much easier to use those little boards for trivial projects too. (The rails top/bottom are not connected to it, you'd need to run a couple of wires from the sides of the board to the rails..)