The Midiworks keyboards will be the Fatar TP60L or LF I believe which is their premium design:
http://www.fatar.com/Pages/TP_60L.htm#Fatar do many variants e.g. with wood surface or black white reversed etc. Plus cheaper ranges like TP6 or TP8 though no personal experience of them and look too plasticy compared to the TP60 metal structure. And they make classical organ expression pedals.
I have four basic TP60s and they feel lovely, even if plastic topped. Highly regarded on these fora.
You do have to add the cost of a MIDI card and ribbon cable for eack keyboard. And design your console so you can access them - occasionally a single ribbon cable contact may loosen loosing you eight notes on the keyboard as it uses scan matrix. Also they don't come with thumb pistons so make your own (very fiddly!) or pay for MIDIWORKS etc to do the fiddly bits for you.
Farar will not sell to end users so you need to find a supplier. Other manufacturers are around too and mentioned here from time to time.