[Dylan16807]

> Most of the time you want to cut off ‘non customers’ as soon as possible

If you mean this literally, one of the best ways to turn non-customers into customers is to give them a way to pay you. Which means telling them the price. If you're implying something else by ‘non customers’ then I'm missing the implication.

> and don’t leave ‘big fish’ without having direct contact person who can explain stuff

You can give a contact person and have a list of prices.

> People just clicking around on their own will make assumptions that need to be addressed in a way no one wastes time.

Making everyone call you to negotiate is going to waste time.