At Giorgio's 0,8€ per key estimate, this would be around 52€ and does not require matching alphas.
I propose to run this in addition to the ansi set in the first post instead of a norde 'addon', as this would be cheaper.
What locale is that?
Do you really thing a SINGLE ISO locale set could hit 150 units?
Can you name enough community members to at least sell 20 of these kits?
There's a GMK Dolch GB run in a German keyboard community, a VERY popular color scheme that has very limited availability in ISO-DE so far - best case scenario for a successful GB - and they will have a hard time reaching MOQ.
The best chance we have is the "almost full" NORDE kit that will hopefully soon be offered for Carbon. Making a NORDE kit for GMK Carbon was the initial inspiration for this whole effort here. I am curious to see if Carbon, by far the most successful GMK GB in the recent history, can support sales of 150 "full" Norde kits.
ISO-Int support in GMK GBs has been very disappointing for me so far and I want to improve it. So far we are seeing more and more large GMK sets that include a few ISO-UK keycaps which are probably already in the kit I am working on.
Take this GMK GB as an example:
https://geekhack.org/index.php?topic=85147.0They already include the Q@ and Mµ and two ISO-UK keycaps. With an just 28 additional keys (current key count 148 so just 19% more keys) they could offer very good support for four additional ISO locales and add rudimentary support for another three locales!
Sorry, I am derailing this thread a little. Will open a new thread for my proposal and hope maybe this "ISO-International essentials kit" is taken into consideration/calculation by the OP.