There are Chinese clone knockoff shifters that sometimes have the word Shimano carefully placed in the ad, usually in the pictures or the description but not the title, and are
not a Shimano product. This is what you will find first on Amazon. They cost half as much, $20/pair. They might work fine? Take care and caveat emptor.
Not Shimano
https://www.amazon.com/DMAIP-Profess.../dp/B07T72F7J9