Yes, I will definitely combine shipping if you win more than one of my auctions. As for cost, I'll get back to you later today after I check the options on the work computer. Thanks for looking!
I've checked and checked and checked some more and the cheapest shipping I can find to Canada is $14.45, even for a little ring, because the ring is over 1/4 inch thick. Isn't it crazy how much it costs the U.S. to ship to Canada!? But of course, if you win more than one of my auctions I will combine items so shipping will be more cost effective.