So... What happens if you don't take it in for this "service"? Does Tesla void your warranty? What if you wait til 100,000 miles? Do they give you the 50,000 mile tune up for the $900?
Since you only took ONE year to go four years' worth of service, why are they replacing the battery coolant every year? It wears out? I don't believe it. Sounds like battery coolant should be replaced every four years. For me, that's over 150,000 miles.
I don't think I'll take mine in. Let's see what happens.
For that matter, the mechanic down the street can change wiper blades and check alignment. As far as coolant, how hard is that? I think Tesla is grossly overcharging (nothing new here, folks) for unnecessary "service". My opinion.