After checking everything one last time, adding open hardware and Walltech logos to the back, and choosing board options, the PCBs are finally on their way. 10, with black solder mask, .8mm thickness, and plain HASL coating. $15 shipped from electrow.com. I'm a religious and loyal OSHPark customer, but in this case, (a massive sandwich of boards) a thinner than 1.6mm pcb is a necessity, and I'm a fan of black PCBs, so that was an added bonus. It's also 10 of them for the price of 3 from OSHPark, because of the non-gold option, which although great, might not be worth it, I'll find out. This is somewhat a test to see if this is a viable supplier, and if it isn't up to snuff, I'll go with OSHPark for guaranteed perfect boards in royal purple. The final design: