I think 200/250 EUR for the Natami is completely unrealistic. That's the range that's been indicated for the FPGA Arcade. I'd be surprised (pleasantly so...) if the Natami ends up at or below 600-800 EUR.
Maybe you're right... I didn't check precisely what's hardware it's "inside" NatAmi (it was just a thought about a very attractive price for being successfull).
Anyway if you are right about 700/800 EUR, I'm sorry but I won't buy it!
_I_ think the maximum target price NatAmi may be "good selling" (in Amiga terms, of course) could be something around 450 EUR (anyway less than 500 EUR), if supported by convincing performance/features/enthusiasm.
...even just the plain board (if it's a matter of adding case, drive, keyboard, mouse and so on).
This is my personal opinion, of course...
...but I think I'm that far from reality (see how many Sam boards have been sold, since their price - even if it's a bit different).
BY!