TCTD tweets this link to a forum post where the likely prices are listed:
Time frame: first 5 “beta” kits < 2 weeks ; next kits ~ 4 weeks, I have stocked parts for 20 complete kits. Afterwards, restocking for more units may take 3 extra weeks.
Prices are likely to be: PCBs only – 15€ ; PCBs + ATMega328p with bootloader/firmware + CEM3379 + display (all the non-standard parts) – 65€ ; Complete kit – 115€ + shipping. I’m paying fairly high custom taxes when ordering stuff from Digikey, so if we could find a way to organize the distribution of kits directly from somewhere else that would be awesome.