I've had an email from the bookseller I've had an issue with. They say they can't reverse the COD charge, but they have decided to refund my money. And now I know the reason for it (partially, at least): They used a carrier that doesn't know that the NAFTA agreement signed last fall resulted in Canadians being able to buy $150 worth of goods online before duty/tax kicks in. The books I bought were only $23.90. So if they were going to collect anything, it would have been GST to the amount of $1.19 - which I would have had to pay up front during the checkout, and would have questioned, because only Canadian sellers charge GST on Amazon Marketplace purchases.
Another of my purchases is from a different seller that now uses this carrier. I am anticipating another round of arguments and telling them to refund my money because I will NOT be paying this charge that isn't valid.
So if I want these books, I'm either going to have to buy them separately so they won't be shipped together (after they're returned to the seller and hopefully nobody else buys them in the meantime), or use a seller that doesn't use this particular carrier... or buy from a seller in the UK or in Canada. Or I might have to see what's available on eBay (not a great choice since the shipping charges some of those sellers have are astronomical).
Another of my purchases is from a different seller that now uses this carrier. I am anticipating another round of arguments and telling them to refund my money because I will NOT be paying this charge that isn't valid.
So if I want these books, I'm either going to have to buy them separately so they won't be shipped together (after they're returned to the seller and hopefully nobody else buys them in the meantime), or use a seller that doesn't use this particular carrier... or buy from a seller in the UK or in Canada. Or I might have to see what's available on eBay (not a great choice since the shipping charges some of those sellers have are astronomical).