[xp84]

If your thesis is that having, say, a main navigation link called "Pricing" linking to really clear pricing and a clear explanation of how it works, would reduce support queries in the form of "What is your pricing/how does it work?" I would question how much time you've spent in front of customers. People will 100% ask questions even when the answers have been made glaringly obvious. For instance, if your site clearly says it's only offered as a cloud offering you'll get emails asking you if you can do on-prem. etc.

A few people can be deterred by a great FAQ and overall clear docs. But those are called "smart people." Others are either too dumb or just don't want to be bothered to spend any time looking for their answer, even in the most obvious places, before asking someone.