How to handle variable number of days?

I have one client who wants to book people for tours.

The person registering for the tour can choose the number of days they want for a tour, and the price is set per day.

This would have to apply to both group and individual, of course.

Is there a way to do this WITHIN EB? I can think of a way to perhaps get something in Paypal, where the user selects the number of days, but I would like to be able to have more control over the calculation, so that I don't have to make a different Paypal "button" for every single tour possibility. Different tours might be 3,4,5 days, and others might be 5 or 10 day only, etc. So, timings are more complicated. It's doable, but not desirable to make a lot of different button sets.

I have found the option to set different rates based on number of people in the group. It's called "Group Registration Rates" and appears in the Event editor, on the right hand side, at the top.

It's unclear if it will allow additional registrations within the same group on a different day or not.

Please see my response on other post for the settings you can use.

Tuan