There is no point in posting price figures since we have no clue if and when chips will be available.
As for the open source issue, I was not clear in explaining what my concern is. I'll try again.
Open source HW means everything is openly available for anyone to build the device from scratch. Arduino is a typical example, as are 3d-printers as a current hot topic. DIY with Arduino typically means you order a kit and solder it yourself to play with. The full blown open source approach is different: you take the design files (schematics), do your layout, create PCB, solder yourself or pay for assembly. The numbers I gave for EMS ramp up is what our company pays when we build new prototypes (also includes testing). It is Swiss based and therefore maybe too high, but bottom line is there are costs involved that are advantageous for the large scale producer.
With that in mind, there is one factor that makes Bitcoin mining devices unique: it imposes interdependencies between producers. Say you buy an Arduino kit, while your neighbor takes the open source design documents and ramps up mass-production to build 1000 Arduinos. You don't care, or maybe you are even happy if he can offer better retail prices. Now move over to the mining board. You buy one, while your neighbor ramps up mass-production. You won't be happy, since he reduces your mining income.
And that is exactly what will happen, driven by pure market logic - ending in mining centralization.
But this is all speculation until we have chips available, so better postpone it to the point we know it is doable.
zefir,
I do not see nothing wrong in both approaches.
My point is:
1. who have the guts let invest and build PCB and make business out of it with some profit is welcome
2. Who wants to have DIY to be able to buy from business complete product or DIY kit
3. Who wants to have all docs, schematics and pic source publicly available to build own boards not for reselling
And i do completely agree with you words about support and warranty.
What i am saying is that we ought to have all schematics, components, software code publicly available. And every one shall decide which root to take 1,2 or three.
I do not care if someone will produce 1000 broads or just one. But i care if i want to produce just a few boards for me to be able to access same docs and technical details like the guy who is making business out of it. And i do care for the docs update also - When i found something wrong even with my single board i will report it. I will expect same to happen with the guy making 1000 boards. We all are obliged to contribute to the open source no matter if it is a business or hobby project
best
PS: the approach was similar with NG Icarus and Lancelot - All is published in github schematics, docs components, bitstream. And no one except NG as far as i know made a mass production just because two reasons - No guts/money to invest and the price of spartan itself.
Let us take our project to the end like Icarus, lancelot git with pcb design, git, docs, software and every one to decide which route to take