@sashaeslami We started Plivo with a simple vision of helping businesses move to the cloud, use simple APIs for building Apps and not having to pay markups from telecom carriers. Our focus has always been to solve the Infrastructure problem.

This is the primary reason we want to allow our customers to have access to the best pricing possible (without crazy markups).

In some cases we may not be able to offer the best price, and hence we have Bring Your Own Carrier Model [1]

[1] - http://plivo.com/byoc/