Those prices are generally in line with what my local toyota dealer charges. Some of those items can definitely be DIY but it depends on your interest/skill. I would do the flushes over time except for injection and throttle body services.
And you will never know till all of a sudden you smell something burning and a check engine light pops up on the dash.
Also some interesting photos of belt wear here Toyota Prius: How to Inspect & Replace the Drive (Serpentine) Belt - PriusDIY.com
It is interesting the water pump is driven by the serpentine belt. Thought that was kinda "old school" and most newer cars drive it of the timing chain or belt?
The Prius serpentine belt is one of the scariest latent catastrophic problems and the easiest and cheapest to fix by timely maintenance. Mine looked fine when checked at 190,000 miles until it was removed and I saw that the underside was full of cracks. I’m not sure how old it was. May have been less than 100k since prior owner seems to have followed Toyota maintenance schedule on everything else.
Since the 1NZ-FE engine was used in the Echo and Yaris- they needed a belt to drive the alternator on those cars. I'm sure it was easier to keep the mechanical water pump than the electric design on the gen3 (and the later Yaris). Posted via the PriusChat mobile app.