Create simple 3d animations

I’d like to create some good fluid animations like this one :

https://www.pinterest.pt/pin/AYd8EMsmd_nAbH5pbpkqtvEtdlBHtgTSpJsVUv_i_nv2J4HZgfRSd9rzWSwsCxqzVD3IaHrgnyGWh87WXwdsgkA/

There would be around 200 different animations.
Only if you are able to furnish a good quality animations, could you please tell me how much it would cost and how long it would take to make the animations ?

Thanks in advance.