Selling out some models, possible Blender

Hi there,

I’m trying to sell a bunch of my library models. Mainly Architecture, Traffic Systems, Bridges etc. I’m not sure if Blender artists need that stuff, but I converted the first model to Blender 2.8.
So what do you think?
What is needed for Blender work?
Its all shaded, organized and optimized with lot of instances. All UV-ed. Not sure what more is needed.