I want my customer to have a coupon code where they get $4 off for every 5 items they buy from a certain category. For example:
0-4 items from cat A = no discount
5-9 items from cat A = -$4
10-14 items from cat A = -$8
15-19 items from cat A = -$12
I've been trying all different condition and action rules for over an hour now and can't get this logic right, which I thought should be pretty straight forward.