Pirate Ship offers up to 87% off USPS rates, making it a solid choice for...

https://bizzmarkblog.com/pirate-ship-vs-shippo-for-beginners-which-is-less-confusing/

Pirate Ship offers up to 87% off USPS rates, making it a solid choice for sellers focused on domestic shipping. Their friendly support is available via email only, which might slow things down