Already there: it’s 11.99€/mo. in Germany. Per year, that’s 143.88€ and converted to USD that would be $151.63/year.
If you are an Apple fanboy, YT charges the Apple Store fee on-top and your YouTube Premium will cost 15.99€/mo. or, converted, $202.25/year. But no sympathy for Apple fanboys, so I couldn’t care less about that.
Subscription services are so scummy that I wonder why they are even allowed. They removed YT Premium Lite and now FORCE you to also subscribe to YT Music even if you don’t want or need it. That’s predatory and exploitative and the only reason for not giving customers the option to just pay for ad-free videos is greed. In reality it went like this: they set up an infrastructure for a music streaming service and invested money to do so. People are not interested at all in their music streaming service, so they are not recouping the cost. Easy corporate solution is to bundle the shit nobody wants with the shit everybody needs to justify an insane price hike. Ta-da!