IMHO, you can make money from the hobby easily enough, but to earn a
living from it will be pretty hard.
It's a niche market (although it's growing) and there are already some others doing similar things. One advantage you have is... you're SpAmRaY. You're already known and trusted (speaking for myself at least) by a large portion of your target market.
I reckon baldgye is right about those two GMK sets. Perhaps a Hack'd by Geeks colourway would also sell well (at least I'd buy a GMK version), but best to chat with jdcarpe about it if you want to use it. If you also sell all the modding equipment and items (keycap pullers, switch openers, Krytox blends, range of springs, stickers, perhaps some cases?, 1.8mm LEDs?, wooden or Noko palm rests?, notched TKL and 60% plates?) as a "one-stop shop" that would be cool, too. It's a hassle to keep track of the logistics of having stock, though. Each item may have a different lead time, etc.
Also, if you can find a service / item that keyboard enthusiasts want or need that nobody else is providing and you can provide, that's a good thing for everyone.
I am trying to turn one of my keyboard ideas into a product, with an eye to do the same with another of them later, depending on how things go, and it's a lot of work with a lot of little details as Ivan said. One extra hurdle I have, though, is certification. Making a product for international sale is not as simple as it seemed at first. I have to weigh up whether it's worth putting all the effort in and losing some aspect of the "fun" of the hobby against the value of getting the product into the market. At moment I think it will be, since it's something I know I'd like to have and use and hopefully others will appreciate and want it, too. Even then, I'm not sure it would provide enough income to quit my normal job, but I can hope
![Smiley :)](https://cdn.geekhack.org/Smileys/solosmileys/smiley.gif)
Some great posts in this thread.