average shipping cost for small business cheapest shipping from canada to usa shipping costs for small business international shipping rates from canada canada to uk shipping printful and squarespace USPS Priority Mail Open & Distribute® Service fedex label online USPS First-Class Mail® fedex buy label USPS First-Class Package Return® https://beaudtivj.bloggazza.com/27799723/a-secret-weapon-for-usps-priority-mail-express