eBay International Shipping (eIS) isn't a great system, but I think it could have worked okay for shipments to Canada if world and US events hadn't pulled the rug out from underneath it. First, Russia invaded the Ukraine which drove up oil prices and as a result shipping prices because transportation companies use fossil fuels. (And that drove up the price of pretty much everything else.)
Second, USPS has been making a lot of changes with its domestic shipping. What you've posted for tracking is a domestic shipment initiated by the seller, so your item took a week to travel from one point in the US to another without any sort of involvement from eIS.
Then, Trump found his way back to the White House and you know what's happened there as far as tariffs and other trade barriers. This has made it more difficult for eBay International Shipping to get goods through the Glendale Heights hub quickly, and cuts and eliminations of discounts to mail consolidators have made it more challenging for eIS to offer its services at a competitive price. And then once you add the seller's charge for shipping the item to the eIS hub (a charge that's likely higher than it was a year ago), the net shipping charge to you becomes pretty steep and might be steeper than it should be if the seller didn't provide eIS any information on the item's shipping dimensions and weight.
I do have to ask, though, why you're even bothering to follow the tracking for your item when eBay provides estimated delivery dates. I'll admit that I used to follow the tracking of my items pretty religiously until I realized that following the tracking doesn't make any difference to whether or not I receive my item, how quickly I receive the item, or whether or not it arrives in the condition promised in the listing. What happens to the item between when the seller drops it off and when I'm supposed to receive it is pretty much irrelevant. I have no control over what the item does while it's in transit and I have better things to do with my time, so I now just make a note of the earliest estimated date of delivery and start checking on the item's progress or lack thereof a couple of days before that date.
