£9.99/month. I had unlimited on my Model S. The extra features and speed of my Model Y make internet things worth having... when I need them.
For trips and holidays I subscribe for a month. This is great for using the satellite pictures to better locate where you're meant to be. I stop the sub when I'm doing mostly local or other driving. at £9.99/month it is modest enough that I wonder about just letting it roll, but then think 'hey, that's £10 I could spend on books'.
As folks say, if, for some reason, you need to watch YouTube or Disney+ while stopped and you are not subscribed you can connect to your phone's hotspot.