Owing to third-world Canada Post performance and practices, I advised the seller to either / and:
1. Have insurance on books (that are shipped via Canada Post).
2. Use a more rigid package for the book (was sent in a shipping envelope).

This is because the book hard cover has been damaged by handling (few holes and bent corners). I was lucky that the package (envelope) was waterproof, and that the book was not stolen: The postman left the package out in the open in the rain, on my front porch.