If you set final cost to Cumulative, xshippingpro will sup up cost of all unit rows and even applicable Additional Price. Let look into following setting:

Before continue into further lets discuss two things.

**How doesXshippingpro calculate**

*Per Unit Cost*?**Per Unit Block**is 1 for the second unit row. Since cost is defined $2 to that row. So each block cost would be $2. Lets calculate how may blocks out there.

**Total blocks**: (End – Start) / Per Unit Block = (20 -10.1) / 1 = 9.9 i.e Round value: 10

*One thing is worth to inform that Xshippingpro would not round if you would have set*)

**Allow Partial**is Yes**Total Cost**: 10 x $2 = $20

**How does Xshippingpro calculate**

*Additional Price?***Additional Price**rule and try to calculate shipping cost depending on its value.

*or whatever Rate Type you defined. If you define Rate type is Quantity, then Per 1 Item*) basis unless you define

**Per Unit Block**in the last unit row.

*Per Unit Block*defined to the last unit range row. So additional price will be calculated for per 1 KG since Rate type is Weight. Lets say Additional Price is $10, that means cost for every KG is $10

**basis. For example, if it was defined 2, additional price would calculate per 2 KG. Lets say Additional Price is $10, that means cost for every 2KG is $10**

*Per Unit block*Let’s proceed to main discussion. Lets say we have cart weight 60KG so what would the final shipping cost according to above setting?

**First row**: $5

**Second row**: $20 (No of blocks: 10 and Cost per block: $2 ,Therefore, 10 x $2 = $20 )

**Third row**: $20

**Additional Shipping Cost**: $50 ( Additional Price $5 and we have 10KG to be calculated per 1 KG basis)

**( $5 +$20 + $20 + $50) = $95**