Hi, I have checked your project description, These are prices that I can be at your service (I wrote them for small to large plans):
+ Modeling an apartment in Revit and doing unlimited modifications, complete 2D and 3D Views and Maps and simple shaded renders in Revit: 40 to 60 USD
+ Adding complete furniture objects (Revit usual families): 20 USD
+ Export the model to 3DS Max, Applying Floor, Wall Paints, lights, doors, and windows and give realistic renders: 20 USD
+ Adding complete 3D Objects From my collections to see the layout and give Interior renders and a Graphical panel render: 30 USD
+ Choosing and modeling special furniture from your local markets, Model, Material and give render with them: 40 - 100 USD
+ Walkthrough animation in the scene with VRay engine 20 USD Per 10 Sec
Best Regards.