40 kilos -- Shipping cost is $100
50 kilos -- Shipping cost is $200
60 kilos – Shipping cost is $300
And our first PO is 45 kilos.
45 kilos = $200
So we have free space for additional item 5 kilos.
We will issue second PO for 5 kilos send it to you.
= We can get 50 kilos with the same shipping cost.
First of all I need to know exactly weight and the shipping cost for our first PO.