As a former Lexus owner, I can say scheduled maintenance at Lexus costs A LOT, at least at my local dealership. When I owned mine, the first "minor service" (i.e, oil change) was included at no charge...don't know if they still do that or not. Subsquent "minor service" vists were around $250, which included an oil change & "checking" various fluid levels, etc.

What I learned was the key thing to ask for was just a "Lube, Oil & Filter". Their charge for this modest service: $50. Still, twice as much as the local Toyota dealer though.

Of course, YMMV with your local dealership...perhaps some are more reasonable than others.