A lot of ordering and pricing information is available right here on Bimmerpost. For the 2025 model year for the 3 Series -
https://g20.bimmerpost.com/forums/sh....php?t=2108515
If you Google - BMW model year (say 2023) G30 (for the 5 Series) ordering guide or pricing guide one of the first results will usually be the page on Bimmerpost or Bimmerfest that has those documents.
https://g30.bimmerpost.com/forums/sh....php?t=1927747
The Ordering Guide is not always available, but the Pricing Guide is virtually always available.