I recently picked up a mint Sonos bundle, ZP100, bridge unit & controller for $35 at a salvation army surplus store. YES! What a greet deal your thinking, after testing at home, the only thing wrong with it is that left speaker terminal post was snapped off. Every thing else is working flawlessly.
I decided to start a thread on doing general repairs on your SONOS equipment.
Hence, currently I am searching online for original SONOS speaker terminals and have found that there is very little replacement vendors out there.
But, if anyone out there who might know of a good resource, please post those links here and I'm sure this in hand is common and will help the next person. :))