Got a bit of a problem the Regular Parcel cost is WAY too much! I buy satchels Regular ones for 5.50 today a customer got charged 10.90 for Regular Parcel... I checked the dimensions it seems cheaper for closer locations but if I enter a post code on the other side of australia it ups the price... Can't I just have two options Regular Satchels 5.50 and Express Satchel 7.50$

The only time the cost would increase would be if the customer orders multiple items and that should be determined by the dimension, weight etc...

How can I do this?