Read the factory reset FAQ?

Not sure there is a huge market for old Sonos BOOSTs these days, since newer devices don’t use SonosNet. 

I think too, but I will try

Let us know how much you get, several folks here have ones we aren’t using and if selling is worth the effort it would be nice to know.

I moved from my Boost a couple years ago to wiring a couple of my Sonos speakers, that seemed to work better than just the one Boost.

Since I moved all to WiFi as the new Sonos stuff doesn’t support Sonosnet and I didn’t want a mixed wired/Sonosnet/WiFi setup, so far it is working as well or better than before.

Hi Stanley, I would say 45,-€.