Yes, SPD. https://www.ebay.ca/str/serverpartdeals. I think it was UPS to Ebay international (Asendia in this case) and then to CanPost.

I haven't run with GHD, though their Ebay.ca storefront looks like it has a similar setup for shipping.

I ordered a pair through their Ebay store front a few months ago. Shipping through Ebay was cheaper than their main site. I vaguely recall that 3 or 4 was the break point for it to be cheaper to order through the main site. But, YMMV. About 30 USD for the pair.

It took a couple of weeks and the last 1.6 kilometers was through CanPost. They did want duties/taxes on it. But, if you pay through the CanPost website about a day or so before, you can just pick it up off "the door step" vs paying the fellow at the "door". I'd have to go digging but D&T was about 50 CAD for the pair.

No issues so far, RNG willing.

My only gripe, for small values of gripe, is that if you can offer free ground to Alaska, you should offer free ground to Canada, excluding D&T, after a reasonable dollar amount is reached. I'd be willing to get up to that dollar amount. Oh, I don't doubt that there are perfectly valid and acceptable business reasons for not offering. But, it would be nice.