The "MX Master 2S (Wireless)" mouse from Logitech connects wirelessly via Bluetooth or via the Logitech Unifying receiver, which is connected via USB. There is no wired connection option for this mouse.
In my opinion, there are different prices for different colours.
Subsequently, if the colour is the same, an older item (same product, older packaging) is cheaper or more expensive.
If the name is the same, I would take the cheaper one. Makes no difference
Logitech Options -> Point & Scroll -> Smart Shift "disable" -> Set Fixed wheel mode to "Freespin".
I hope the 2S will also be supported by the new Options+ at some point...