Shipping isn't too bad, as long as you don't want it fast.

Under 1kg (2.2lbs for the metrically challenged) it is generally in the $12 range for shipping via Surface (less if the weight is less than that again). Air is a little more expensive. Once you get over the 1kg weight, it then falls into Expedited, which can end up being pricey, but, depending on what you are buying (ie: multiple large kits) it can end up being cheaper or at least the same as a parcel under 1kg.

Actually sometimes cheaper to ship to the US, then it is to other places in Canada, which is completely messed up.