Hello, I'm using Zencart 1.3.8 and want to price a product in the following way:
Product: Classes, price $100/week (each additional week $80)
Attributes (as checkboxes):
week 1
week 2
week3
week 4
Here's what I want - if you just sign up for one week it costs $100. If you sign up for additional weeks, each additional week is only $80. I don't know which week people will start with, so I was trying to make something that says - if they choose 1 attribute the total cost is 100 but if they choose more than one attribute ad $80 to the cost for each extra attribute.
Is there a way to do this, or a different angle to make it work?
Thank you so much.
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