Hi Ton_O, the solution is almost completed. Hardware part more then firmware, but we are progressing very well. On hardware side I'd like to test existing solution (let's call it Revision 4) how SMPS pre-regulator based on LTC3864 will works and as you can see in few previous posts idea is to make a whole solution more compact. That will be Revision 5.
Firmware in version M2 (Milestone Two) should offer complete control over local TFT display with touch-screen (what we have now is SCPI remote control, and basic functionality over TFT display/touch-screen as it's shown in latest video).
Cost of the whole solution is not small, BUT if we take into account capability, performance and that is completely open and with advanced control then even in quantity of one it starts to make lots of sense. Total cost can be estimated using BOMs that are available on the GitHub, and for the Revision 4, they can be find on the following links:
Arduino Shield ~77€ (without Arduino board)
Pre-regulator ~36€ (for two)
Post-regulator ~62€ (for two)
AUX Power supply 33€
When we add enclosure (20€ without heatsinks nor customization of front and rear panel) and main transformer (~50€) total without VAT and PCBs is about 280€ (or 300€ with "eBay-grade" Arduino board).
Many people already asked the same question about selling PCBs. That supports my idea to organize group buy for at least PCBs and possibly customized metal enclosure. If you don't want to wait Eagle and Gerber files are also available on the GitHub and if you need three (that is min. quantity for order) or more maybe OSHpark could start to be attractive. You can find even more then what you possibly need here.
Since we are still working on it and everything is open for new suggestions don't hesitate to post your comments, wishes, ideas, etc.