Thanks for your reply. I understand how to decrease my vertices on the model, but but the following is happening once importing your models over from a modeling package to Unity.

If you have more than one material:

increase vertex count by material count

If you have a UVMap:

Increase vertex count by magnitude of 1 x number of materials with a UV map

if you have multiple textures on your UV map

Increase vertex count by magnitude of 1 x number of materials x number of materials

if you are not using smooth shading

Increase vertex count by magnitude of 1

There are dozens of other multipliers as well. Basically, nothing is free.

A model with 200 vertices fastly increases to 2000 vertices once imported in Unity. So I was wondering if there are any good practices to keep the vertices low with all above in mind.