Pirate Ship offers super low USPS rates—up to 87% off shipping—which is great...

https://oscar-wiki.win/index.php/Is_Pirate_Ship_Good_for_a_Single_Platform_Seller_Who_Wants_Simple%3F

Pirate Ship offers super low USPS rates—up to 87% off shipping—which is great for sellers focused on USPS. Support is email-only, so it’s perfect if you don’t mind waiting for replies