Good lord, my price is €12.99 /month (Germany). I guess that's what Google calculates as the purchasing power parity exchange rate, but credit to them, at least they're taking that into consideration.
I feel like that's fine, honestly. They've probably done the math and found it's better to sell YouTube Premium for a dollar in India and get a bunch of Indians on the service than to charge $25 or whatever everywhere and end up getting almost nobody over there.