A reprap style project could probably make a passable document printer- but what’s the appeal? People only work on those projects to make new or previously unobtainable machines available.

I just don’t think it’d be worth the effort.

And have you ever read the forms? I don’t know if writing the software could be seen as tax advice or filing on behalf of someone.

Probably not. But its enough that I wouldn’t be interested in working on the project.

where legally, “sell” includes things that most people wouldn’t consider a sale

Allowing access for valuable consideration is pretty cut and dry. What is the legislation defining beyond that?