Once I hear these are ready to go and working properly I would be happy to use my fab to make some and sell them for a small markup for my time the same way I do my 4000 boards. They are considerably larger and I'd expect they would be close to $85 or $95 each at cost from the US fab I use. Chinese fabs are not going to be much less if you factor in shipping. I make nearly nothing at the $85 for US and $95 for international over the $70 they cost me in batches of 10. (Shipping to me is another $18 per 10). I include free shipping in those prices.
I'd do the same in this case if interest is here in the US is enough to get a few runs. At 50+ the price per board for me also goes down. I'd even consider doing board swaps for those wanting a new 2000 from a dead one. It's faster for me to do them over all the work to ensure one is cleaned up after a battery leak believe it or not.
EDIT: I just got in touch with my friend Peter that does boards for me (I get a huge "friend" discount so having someone else do them will be considerably more) and he tells me a board this size that is only 2 layers he could do at the same price as the 4000 boards ($85 each US, $95 international shipped) If you want to see the shop I use its located here: https://www.e-teknet.com/
and they do a lot more than just PCB manufacturing. Its all US-based. I am MORE than happy to do the work at getting a batch made though and still let them go for the same price as the 4000 boards I do. I'm not into this for money, I do it because I like it and love to see the Amiga live on. I may even see if the guy that did all this work would like me to charge like $5 or $10 more and donate that extra to him. I want to see him get paid for his time too, and since I prefer NOT to make a lot of money off the work I do it would be a great way to get them out for everyone wanting them at a good fair price.