Every architectural or construction company has its own cost categorization. But one category common to all of them is advertising and promotion. Often it will include costs for 3D visualization services. Some companies are ready to pay a lot for them, while others save as much possible, but in general everyone uses 3D interior renderings to showcase their future apartments.
In the previous two posts we discussed five truly high-end and five utterly awful 3D visualizations (as well as the consequences of using the latter), so readers could see for themselves how dramatic the gap is between paying more and getting less (or nothing).