Here in Poland, we have a huge competition between mobile companies, so the prices are really low. You can get 20GB of data [LTE] + unlimited calls + unlimited texts for ~$6 
WoW great service, i feel LTE accelerates to 150Mbps OP already posted image that each one of the most cost effective price mobile internet service in India, But it's true that each one companies are performing on the way to provide more services at a lower cost.