3D/2D Artist Model,Animation Prices?

Ok but isn’t it possible to get rigging pre-done, some animations pre-done and then fine tune them? Is there a faster way of animating?

Also in terms of modeling what are things that save hours?

I am writing down lists of things that save hours of work.

If you are making a human, and you know you will make humans, can’t you just take animations/rigging/textures that others have used? And then add your own to fine tune? I just don’t see how that doesn’t save at least 50% of time.