Shipping from US to Canada

Hello all I just made my first Amazon FBM sale, I sold a book I had listed for $8.00 USD that was purchased for 12.99 CAD. I do not offer free shipping I always have customer pay separate whether it’s Amazon or eBay

I’m a bit confused on the shipping screen, it’s telling me $15.00 to ship via DHL, does the customer get charged in the end for shipping? I need a complete break down if anyone can help explaining this to me