Without living in Canada myself, I have no idea where to look as for as stores both brick and mortar or online in Canada. Not sure what places ship to Canada, or how expensive shipping would be.
All I can say is do a google search for online Halloween stores and see if you can find what you are looking for and if they will ship to Canada and how much the cost would be. Sorry I can't be of more help. Maybe some of the Canadian haunters here can be of more help. I know there are few of them on this forum. I'm still relatively new here, so I couldn't tell you for sure who they are. Good luck with your projects.