The register publishes no prices and does not intend to. A figure quoted without seeing the car is not a price, and a range gathered from marketing pages would be an invention dressed as research.
What is publishable is the structure underneath a quote, because that is what lets you compare two of them. Almost every difference between two honest quotes for the same car comes from one of the things below.
Not everything runs on the mileage
A service is not one job priced as a block. It is a schedule of items, and several of them are on a clock rather than an odometer — brake fluid is the usual example, and it does not care that the car has covered nine hundred miles since last year.
This is why a car due a time-based item and a mileage-based one in the same visit costs more than the same car due only one, and why two owners with identical cars get different numbers in the same month. Ask which items are due and on what basis, and the two quotes become comparable.
What the record is worth
A workshop that can write to the digital service history is doing something a workshop keeping its own record cannot, and it is reasonable for that to be reflected. Whether it matters to you depends on what you plan to do with the car — it matters most to the next owner.
Neither is wrong. A folder of dated invoices naming the parts fitted has settled warranty disputes; it is simply a different asset from a record the manufacturer can see. Which one you need is a question about your warranty position, not about the workshop.
Parts, and what happens to the old ones
Genuine, OEM and pattern parts are three different things and only the first two belong in most of this work. A quote that does not say which is being used is not comparable with one that does.
Asking for the old parts back is not an accusation. It is ordinary practice, it costs nothing, and a workshop that expects the question tends to be one that answers the rest of them straightforwardly too.
The question that separates two quotes that looked the same
What happens when they find more work — a call first, or an invoice after. It sounds procedural and it is the single most common source of a bill nobody expected.
A workshop with a clear answer, ideally an authorisation limit above which they stop and ring you, is describing how it runs rather than making a promise. That is the answer worth having before the car goes in, and it is free to ask for.
Information, not advice about any individual car. Guides are written by the register; where one is reviewed by a verified specialist, that is the same specialist you can book through this site.