Hi,
Many thanks for your support. My query was relating to something else, but your colleague has answered it via email support. I have shared their response below in case other users wanted to know the solution. Cheers.
Hello,
There are multiple alternatives, but if not matter the choices selected, the two first ticked are free, a possible solution would be to enter the number 1 as the choices' values, and I'll try to describe the equation with a hypothetical example:
Assuming the checkbox field is the fieldname1, and the price for every additional checkbox (two first free) is $10, the equation can be implemented as follows:
MAX(fieldname1-2,0)*10
