If you have an iPhone or iPad you don’t even need to use a VPN to get cheap Premium. Just make an new Apple ID with an Indian address, top it up by buying a digital Apple Card on Amazon.in and redeeming it to your Indian account in iTunes on a computer. Then on your iPad or iPhone go to your Apple ID in the settings, log out of Media and Purchases and login with the Indian account. Then you can buy Premium in the YouTube app with your Rupees, you don’t even need to change your YouTube account.