Hi Alex,
ill be making a run of my 18 slot Active Terminated S-100 backplane in red silk screen, the bare PCB will be around $80. the price is quite high because just the backplane board measures around 16". comes with a side board (separate) that lets you plug in a 20or24 Pin ATX PSU and get numerous voltages out on a terminal block to wire up to the backplane. if you are interested
Regards,
Antony