Maybe.
Or he could be confused.
Or it could be that he doesn't do Monday very well.
Make one more attempt to get the situation corrected. The easiest way would be for him to send you a Paypal invoice (don't worry, you have excellent Buyer Protection on this) for $160 in Canadian dollars. He should include the eBay transaction number in the text box for his own records and yours. Also any random customer service reps.
Hmm.
One thing he can't do is remove or reduce the shipping fee. He can reduce the asking price by the amount of the shipping fee, but the S&H stays.
But just one attempt. And maybe 24 hours.
Then forget it and move on.