Selling Architectural assets or scenes

Thanks a lot for your clear answer.
I went through that link and it answers most of my question. I have 2 more question if you kindly answer those as well:

  • is this 70% is the final that I get or no tax and other hiddn fee would be deducted from that as well?
  • if I buy sme assests from store (like furnitures, materials,…) and use it in my architectural project, am I allowed to sell whole project including those assests?

Thanks a lot in advance.