Well it's on Amazon for $60, not some random site or gouging like the G500s.
https://pchound.com/831911/logitech-g400s/
Logitech.com G500 Height:44 mm or 1.73 inches Width:75.9 mm or 2.99 inches Depth:129.2 mm or 5.09 inches Weight:164 g or 5.78 ounce
Model Number:M-U0010
G400s Height:43 mm or 1.69 inches Width:73 mm or 2.87 inches Depth:131 mm or 5.16 inches Weight:137 g or 4.83 ounce
Model Number:M-U0028
I don't know why their management makes slight deviations, but that's pretty close compared to the xx2 and their own special name (Agamemnon Fortitude! Hephaestus Forge!) line.
https://pchound.com/831911/logitech-g400s/
Logitech.com G500 Height:44 mm or 1.73 inches Width:75.9 mm or 2.99 inches Depth:129.2 mm or 5.09 inches Weight:164 g or 5.78 ounce
Model Number:M-U0010
G400s Height:43 mm or 1.69 inches Width:73 mm or 2.87 inches Depth:131 mm or 5.16 inches Weight:137 g or 4.83 ounce
Model Number:M-U0028
I don't know why their management makes slight deviations, but that's pretty close compared to the xx2 and their own special name (Agamemnon Fortitude! Hephaestus Forge!) line.