The vehicle decides the price
A two-door, a sedan and an SUV with a wraparound rear glass are three different jobs. Flat pricing either loses money or loses the customer.

Window tint
Tint quoting has more variables than most appearance work: how many windows, which film, and what the state actually allows. A booking that skips any of them becomes a phone call.

What the work actually involves
A two-door, a sedan and an SUV with a wraparound rear glass are three different jobs. Flat pricing either loses money or loses the customer.
Dyed, carbon and ceramic are a genuine value ladder. Presenting them clearly at booking is easier than explaining them over the counter.
VLT limits vary and the customer usually does not know them. What was installed and at what VLT needs recording.
In ManePilot

Questions
Services can be configured per vehicle type and as separate packages, so a front-two, a full-car and a windshield strip each carry their own price.
Yes. Each film tier can be offered as its own bookable service with pricing visible before the customer sends the request.
Related
Set up your services once, and the schedule, booking page and invoices all work from them.