Shipping Calculator - For Mals-E

Greetings. I need a custom shipping calculator for the [login to view URL] website. Based on the following information: Products will be shipped to 3 (or more) different zones. For example Product A US shipping - $5 CDN shipping $10 INTL Shipping $20. I am not sure how you will assign a shipping fee to each product but it will vary by zone. My Cart assigns "units" to the items which then passes this value on to Mals. I am guessing the "triggers" will be cities or the person will have to select a shipping destination (Canada, US, Intl for example) Only bid if you are experienced with Mals as this has to work with Mals and Mals alone! (Option 8) I will also want to use this for multiple sites so I should be able to install it myself. I should be able to configure all required zones for shipping (does not have to be fancy I can edit code).