Is there a way to have two shipping-origins ?

My location is in Canada but many of my customers are in USA. I have no problem in setting the "store location" to USA ZIP code so that UPS and FEDEX will calculate correctly. But the problem would be my Canadian customer, they will pay too much for the shipping cost because as if the goods are shipped from USA.
For the time being, I am using "table rate" but it doesn't reflect the real shipping cost.

My question is, is there any possibility to have a second set of "country of origin" and "postal code", so that Canada Post can pick it up as its location?

Thank you very much,

I am trying to do the same thing. Have you had any luck figuring it out? thanks.

The only way that I have been able to code for this is to do it on a per product ... but the question then begs to be answered ... what if you have 1 product from one location and another product from another location?

This then results in needing to compute both products separately ... and that may or may not be what you are looking for ...

To do this does require some extensive customization to be done ...

What shipping module(s) are you trying to use for this?