I really believe real time visualization fee/price is going to be really low, almost free. All the tools required are already available for mass audience at affordable price and some are even free.
Unlimited library of 3d models and PBR materials also available at low prices or free. So, even a person with average skills can create real time visualization with the right tools in his hands. Maybe this is not entirely true, but I’ve seen this trend happening everywhere for the past 10 years in digital computing (programming and art) area.
From business point of view, this situation is great though. For instance, I can hire fresh graduate programmer for low price to help me in some projects. It really doesn’t matter if he doesn’t have the skills yet, since copy-paste programming is becoming a common practice nowadays.
This “copy-paste” situation is also happening in real time visualization now. I did one project for my neighbor (a real estate developer). I created the basic structures and custom objects in SketchUp Pro, grab UE4 (previously tried Unity5 but didn’t really like it), grab some materials from Substance Share website, grab all the props from 3d websites, put all the assets together, and voila, real time arch vis in 2 weeks with minimum interaction (walking and automatic door). I charged him 1500 USD, which is very low compared to what he had to pay for a 4 minutes presentation non-interactive video. My neighbor was happy because according to him the visuals are great, even better than the presentation video. The best thing is I didn’t do anything special, didn’t tweak baselightmass.ini, just adjust the lighting, using PBR materials, adding blueprint to doors, and apparently that is good enough for my client.