Shipping Costs are determined one of 2 ways.
Dimensional weight, also known as volumetric weight, is a pricing technique for commercial freight transport (including courier and postal services), which uses an estimated weight that is calculated from the length, width and height of a package.
Actual Weight, this is the weight of the products in the box with packaging Material.
Once the heavier of the 2 is determined this becomes the billable weight. There are different algorythms for International vs Domestic accordingly, however the bottom line is Dimensional vs Actual and you pay for whatever is heavier.
On this website it is tough to determine actual weight all the time so there may be cases where the pricing will be wrong swaying in either direction. Should the actual price be less we will be happy to refund you the difference, should it be more we will absorb the additonal cost and pass the savings along to you.
Thank you for your patronage
The Miller Team!