The shipping is set up in three stages:
1 – Methods. You create the methods that the shopper will be allowed to select, for these methods you set a rate. This rate if the base rate that is charged on every order regardless of where it’s going or how much it costs or weighs, any other shipping charge is added to this rate.
2 – Range. The ranges are set up to charge different amounts based on which range the total weight of the order falls into. You set ranges for each shipping method, for each country you ship to. The key thing to remember when setting up this part is to be absolutely sure that you have ranges set for all shipping methods and that there are no gapes between ranges that an order may fall into. This charge is added to the “Rate” in # 1 to come up with a sub total.
3 – Shipping extension. This is a multiple charges based on where the shipment is going. Say California is -0-, all shipments shipped to California will be charges the “Rate” plus the fee for the “Range” into which the order falls. That’s it. Now say you find that to ship to New York costs 40% more than it does to ship within your home state of California, so you would set the Shipping extension for the state of New York to .40 What will happen then is, say the total of the Rate and Range for an order comes to $30 and the order is going to Ney York – the shipping would be calculated like this…
30 X .40 = 12
30 + 12 = 42
The New York Order would be charges $42 for shipping.
I hope this helps.