A business website costs more when it has to explain several offers, collect a lead the right team can see, and be edited without a developer. A single landing page is a smaller job. A logged-in portal is a different job again.
Content, the editing model, and the systems the form must reach belong in the estimate. A low price that leaves those out is a later invoice.
We do not publish a price list. After a look at the current site and the job, a consultation can give a range.