Problem possibly related to rule sequence.

Hello everyone,

I have the following conundrum.

Let product A (shirt) be as follows:
1. Shipping Class = small
2. Row cost = 2
3. Item cost = 3

Let product B (jeans) be as follows:
1. Shipping Class = medium
2. Row cost = 3
3. Item cost = 4

I have the following three scenarios:
a) Customer orders three shirts and is charged 11.
Row cost = 2
Item cost = 9 (because there are three shirts)
b) Customer orders two jeans and is charged 11.
Row cost = 3
Item cost = 8
c) Customer orders two jeans and one shirt. They are charged 14.
Row cost for jeans = 3
Item cost for jeans = 8 (because there are two jeans)
Row cost for shirt = none because I want it to be excluded
Item cost for shirt = 3 (because there is one shirt)

Cases a) and b) work. I can’t get case c) to work. Is it feasible?

Thank you in advance

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