The US banks essentially felt as people were getting a cash advance since crypto is usable instantly and is basically like cash. Accessing Bitcoin address is crucial to Bitcoin transactions such as sending the BTC on peer-to-peer transactions in e-commerce, or even exchanging the BTC for other cryptocurrencies or fiat money. CEX is only available in some US states; please see this page for details. It keeps varying depending upon Indian inventory. Includes trading fee of 0.