I reckon there’s apple tax, but I also think it’s competitively priced.
Framework 16” is significantly cheaper if you diy.
Edit: Now that I'm at a laptop and not on phone I could check on the warranty situation. The Dell come with 1 year standard warranty (which is better than Apple's 7 complimentary 7 day), but the XPS is 420aud for 3 years, and the Alienware is 735aud for 3 years. HP situation is better with a HP Care Pack with 3 year support/warranty for 190aud or 270aud depending which model you choose.