That seems a bit high for the ceramic treatment. I had it done on mine the day after I bought it, so I wasn't charged for any paint correction and sweet talked him into $600 including tip (talk to me
@Oldfart). But, paint correction is the most important part.
I did my wife's car myself, because I don't like it. It's a Camry hybrid, which is only a step away from a Prius.
90% of the work was paint correction, using a clay mitt and buffing with various compounds. To do it correctly takes time. The actual application of the ceramic finish was easy and relatively quick. I think I spent around $200 on materials for the whole job.
On my Raptor, I will have the experts do paint correction and may consider doing the ceramic coating myself. Mobile expert so I can finish it of without contamination.