For some of my international customers shipping a large canvas overseas can be very expensive, this is why I also offer the artworks as rolled prints. Your artwork will be shipped in a sturdy tube saving a significant amount on the courier rates. The only drawback is that you will then need to stretch the canvas around a wooden frame yourself although there are many videos on the web explaining how to do this.
Alternatively, you could just frame the artwork in a glass picture frame. The options for a stretched canvas or rolled prints are available on the individual product pages. The rolled canvases and Fine Art prints are both cheaper to print and cheaper to ship.