please set 'D - graduated-to interval scale' for scale type in your pricing condition type (e.g., PR00) definition, and maintain scaling as
1-4 unit - condition amount = 0
>4 unit - condition amount = 20/unit
please set 'D - graduated-to interval scale' for scale type in your pricing condition type (e.g., PR00) definition, and maintain scaling as
1-4 unit - condition amount = 0
>4 unit - condition amount = 20/unit