
That's strange, that it does not let you buy from the Amazon U.S. site... I've purchased stuff from Amazon UK and Germany before! So why not let someone from Canada purchase something from the U.S. site? They should be able to let you use the same login.
Yeah, that Classics set was another Arista release that I've seen in stores before, but it's just the first 5 albums. Maybe you can ask a seller to confirm that is not the set they're offering and it's the much newer one?