Currently, iPayment has two markup options: fixed dollar amount, fixed percent. either with allow or deny override. I'd like a third option: variable percentage of the order total based on several entries in a table.
If the order total is less than $5, the markup would be 300%.
If the order total is greater than $5 but less than $10, the markup would be 200%.
If the order total is greater than $10 but less than $20, the markup would be 100%.
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