Sharri - while not an expert I agree with Fyneplace and you should expect to pay the taxes upon arrival at Canada Customs. If you were a freight company as opposed to an individual you would be "allowed in" without paying but a record or file would be initiated with the requirement for you to collect the appropriate taxes from the buyer and then you would remit them to the govenment(s). Our governments never assume that you will pay up after the fact but collect all they can up front and you have chase them for a refund if they deem it applicable!
If the buyer could meet you there it may alleviate some of the issues as well as your out of pocket cost...
If the buyer could meet you there it may alleviate some of the issues as well as your out of pocket cost...