Update:
I hired a writer for $0,05 / word and an editor / proofreader for $0,02 / word. When the proofreader is done I already have a very nice text. To secure quality the article is getting fact checked by a PHD.
So overall like $0,1 / word. That's expensive but worth it.
When the PHD says the article is fine I'm getting my graphics department on it. They create custom illustrations and infographics. That means I'll get the BEST content out there.
Once this workflow is created I'll create 4-5 high quality articles and start doing outreach to build some links.