Cheapest it’s been Since Feb 2020 according to the camels.

Amazon product: Logitech® MX Master 2S Wireless Mouse, Graphite (910-005131)
Customer Reviews:
Bought this to replace the previous MX Master non-2S version rodent. Love this one even more. A little softer feeling in the hand, and seems to glide a bit more easily. Things to note: | CON: if you connect w Bluetooth instead of the unifying adapter you will probably lose the ability to wake your computer from sleep, due to the fact most machines turn off Bluetooth to conserve power when in a rest state. | BIG PRO: This is huge. A good percentage of white males will, at some point after 50 develop a condition called Dupuytren’s contracture. Essentially this is a deformation of the tendon in the hand which causes the ring, pinky and sometimes the thumb to curl inward. It is curable with surgery, but between getting DC and the knife, if the DC is on your primary hand using a mouse can become next to impossible because most rodents have an elliptical and balanced shape which makes it impossible to properly rest your hand on the mouse. For those with DC who are rightys this mouse is perfect as the shape and slant lets you comfortably rest your hand on the desk taking the bulge caused by DC out of the equation. Really a terrific extra benefit. I’d have this mouse regardless, because it is the most comfortable, but this is a true plus to us afflicted with DC.