One product Canada Shopify / US&International is a third-party POD (Lulu)

[srichter]

Hello,

I am selling a book where I am doing the Canadian distribution, but due to the cost of shipping to the US or Internationally, it is less expensive for customers to go to Lulu.com and order through the third-party as print on demand.  How do have to sales paths for customers for one product based on their location? Thanks!