I have a full price list on my website and have a link to that on my Facebook page.
Here is a suggestion. Now I am no pro, I do this as a hobby, so I will admit upfront that I have no experience in pricing detailing work. So take these comments as 'customer' comments:
You are getting these questions because your pricing is far too complex and very difficult for any customer to determine what the price for your service would be.
First, the customer must determine whether their car is small, medium, large or extra large. You give examples, but then you are a car guy. You know, automatically, that a VW Passat is in the same size class as a BMW. But, as a consumer, if my car isn't listed, I am going to send you a text.
Next you have 12 car packages, with over 15 add-ons! First, I will commend you for the full disclosure and extensive services you offer, as it is fantastic. But, its like a Chinese menu, and just like ordering from the Chinese restaurant, it takes ages to decide from the complex menu, and in the end you just get General Tso's chicken, because its the only thing familiar to you.
The broad list of coatings is nice, but your customers don't read AGO, so perhaps offer two: good and best. (then you can change what product you use for those two, depending on cost, availability etc)
The price list should probably be like a bistro menu: make it simple, make recommendations.
Suggestions:
-One price per package, with a surcharge for 'larger vehicles' (trucks, suburban, commercial).
-Describe the first package in detail, then for remainder packages, list what is added: "Gold package plus...."
-Consider fewer packages for interior or exterior only. I suggest picking your two most popular. Use your add-ons to cover the higher priced offerings. For example, decontamination and wheel sealant as add-ons to any exterior package. These are up-sells you can sell when you are speaking with customer.
-offer two coatings: Better and Best or something like that. Keep it simple.
-Perhaps include recommendations: "Interior Platinum- Perfect for the family with two young kids and a dog. Got car seats? You need this one" you get the idea.
The goal here is to make it easy for the customer to determine what it will cost to have their car done, before they call or text. Once you are speaking to them, your goal then is upselling additional services.