What kind of models sell the most??

Character models
Car models
Electronics sells best.

Sci-fi stuff seems to sell pretty well..... Space stuff (asteroids, planets, meteors, etc.)

Just keep in mind that the top selling items have probably been made by people who have been doing this for a while. Meaning- just because their character, car, or electronics model sells, doesn't mean yours will. ;)

The better idea may be to see what's *not* in the marketplace and make your own market. For example, can you make a car model with more features? Why will your electronics be better than the top seller's product?

Now we finally got an answer to this: https://www.cgtrader.com/blog/infographic-exclusive-data-on-how-to-sell-3d-models.

High quality model with high price, unique idea, and different from other model.

science and medical Model.

i didn`t sell anything

Mainly those models which are required in games and
Daily life needed products