I was able to carry out a search and we are currently lacking corresponding sales offers for the desired model. Unfortunately, I can't say at the moment what it would look like in the future, as we don't currently have any purchase offers either.
Yes, the mouse has an on/off switch on the underside. This allows you to switch the mouse off manually so that it does not switch on automatically when it is moved in a bag, for example. Without this switch, the mouse would switch on when moved, but there is a switch here to prevent this.