Looks like a good deal to me, but it's been on a low price for quite 2 month.
Microsoft's Blue track technology is reliable, I've been using a Microsoft Sculpt Comfort mouse for a long time and the last thing to worry is tracking accuracy. Not sure if this one is easy to take since it is orb shaped.
It's just the Bluetooth connection could be a headache on Macbook Bootcamp. (Rapid drop on connection on new Macbook Pro, A1706)