Let's say your price option is $1000 per place per day.
But you want to charge $2000 instead if $3000 per day when customer books 3 places.
Thus, you will need to create a discount of $1000 per day.
It should only be valid for bookings of 3 or more places.
To do this, create a pricing component.
Enter the name and insert a parameter for the number of steps (days) called STEPS.
In the formula, multiply -1000 by the number of days.
-1000 * [STEPS]
Now click on the Add condition button.
Select Shares and set the Minimum shares to 3.
In this case, when booking one or two places, the discount will not be applied.
See the example in action: