This is the airport side of town, and it changes the job in a specific way. Cars that sit in long-stay parking come back with a week or two of everything settled on them: pollen, exhaust, droppings, whatever was in the air. Booking a detail for the day you get back is a common one for us here.
It is also a working part of the metro, so a lot of the vehicles we see here are trucks and work vehicles rather than commuter sedans. Those price at the SUV and truck tier, and they usually need more time on the interior than the outside.
Humble sits far enough out that a lot of detailers quote it as an add-on trip. We do not. The price is the same here as it is anywhere else we work, and we say that up front rather than adding it once we are on the driveway.
A lot of the driving out here happens off finished road. Between the worksites, the lots and the unpaved shoulders on the way to them, the vehicles we see on this side come in with sand and dried mud worked into the carpet and the seat rails rather than sitting loose on top. That is an interior time problem more than an exterior one.
Contamination that has bonded into the clear coat needs decontamination rather than another wash. Paint correction removes it, and a ceramic coating is what stops it bonding again.