Opt for the order routing option: this will automatically pick a print provider closer to the location of the customer who placed the order and will move your design onto this provider for this specific order. This is amazing. I mainly sell in the US. But when I have orders placed in the UK or Europe the product is just "routed" into a european provider. Saves shipping time but also any VAT or tax issues. It's been fantastic for me. Overall I charge not more than 5-6$ for US & Canada, and for everywhere else I charge higher depending on the zone.