By "expensive signal" I mean more like "hard to fake the enthusiasm" rather than "spent a lot of money". In terms of monetary cost, the DIY ones can be quite c

By "expensive signal" I mean more like "hard to fake the enthusiasm" rather than "spent a lot of money". In terms of monetary cost, the DIY ones can be quite cheap. -- But it's still going to be more expensive & effort intensive compared to just getting a typical mechanical keyboard.