A:AnswerWith the right dongles and connectors, yes. You can use a USB to USB-Micro adapter to get this to work on your android device. However, without the adaptor, it cannot work.
A:AnswerI use Honey app and Google shop to watch for price alerts. The sale obvs ended that you were asking about, but if you have time, there will always be another sale.
A:AnswerThe side grips are rubber and, as with any rubber grips, use over time will wear them down and they will smooth over and eventually pit, depending on how much you use the mouse.