Indeed there are. I fancy the challenge of etching my own for a small number of prototypes.
If there's enough interest then I'd get a bigger batch made up. I see there is one UK based company who actually has the work done in China or Singapore. From memory they worked out to about £3 per NF board if you were ordering a few hundred I think.
For me the only doubt I would have would be supplying the right files for a commercial production run out of the KiCad design.
Regards
MonkeyThink
I looked at the NF rev7 and eventually came to the same decision as you.(It becomes a big investment risk to go commercial)
The prototype would have been interesting though.
If you do go ahead please keep posting.