We don't quite have a way to do that exactly, but the closest we could get would be easier to think in terms of per-item charges, plus a surcharge on the first item, then your Canadian and International rates could be some multiplier of the US charges (e.g., 1.5 times as much, or the like). This will depend on "gaming" our calculator by entering non-literal figures for certain settings, taking advantage of the fact that Weight X Rate = the actual amount charged.
Also consider whether you want to use our Tube package settings vs. Box/Envelope packaging settings (note these doesn't have to match the actual packages you use to ship things), considering the description of how Tubes work differently here:
http://www.e-junkie.com/ej/help.shipping.htm
That said, here's how you'd set this up:
Go to Seller Admin > Cart Shipping Settings and set up the following:
Shipping Origin: select United States and enter your zipcode;
Shipping Destinations: if you will only ship to certain countries, select them in the list, or otherwise select nothing for Worldwide shipping;
Define Packaging: pick 4 package types to represent your size classes (S/M/L/XL), and set their Weight to equal the US first-item surcharge for items of that size class (e.g., if you charge 3.95 first/0.95 each add'l, set this Weight to 3.00);
Leave all other settings blank or 0.00;
Click Next to save settings and proceed to the Shipping Rules screen.
In the Existing Shipping Rules menu, select and Delete any Rules you may have saved there.
Set up your first Shipping Rule for US shipping:
Shipping Rate Calculator: Price per unit weight;
Shipping Amount: 1.00
Country: United States;
Click Submit to save the Rule.
Set up a Rule for Canada:
Shipping Rate Calculator: Price per unit weight;
Shipping Amount: [enter a multiplier here; e.g. if Canadian rates will be twice as much as US rates, enter 2.00];
Country: Canada;
Click Submit to save the Rule;
Set up a Rule for the rest of the world:
Shipping Rate Calculator: Price per unit weight;
Shipping Amount: [enter your multiplier here for Int'l rates]
Country: All Countries (i.e., the rest of your Shipping Destination countries);
Click Submit to save the Rule.
Click Back to Admin.
Go to Seller Admin>View/Edit/Delete Products:
Select an existing shippable product of yours and click Edit;
On the first screen, if Shipping/Buyer's Address is not checked there, tick that box;
Click Next until you reach the Shipping Options screen;
- Weight: [enter your US per-item charge here]
- Package type: [choose the appropriate type to determine your first-item charge]
- Capacity: 9999 [an absurdly high number that will never be reached]
Click Next until you can Submit to save settings;
Repeat this for all your tangible goods;
When adding new shippable products, remember to enable Shipping/Buyer's Address.
