That's really cheap for ceramic. Around here, $200-250 seems to be the going rate for regular tint for a 4-door vehicle. I had my wife's windows tinted at a new shop - the guy opened his own shop after leaving a well-known, reputable tint shop and uses 3M tint. I paid $189 but this was a "grand opening" special price. Our son went to him later but got ceramic and paid more than 2x that. I talked to the guy about putting ceramic tint on my windshield only and it was $200+ just for that.
Isn't window tinting a lot less expensive in the south, like FL, TX, etc, simply because it's so much more common, so much more competition, etc ? I want to say I've seen advertisements like $99 or $149 for doing a car.