Some recent Streaming Music auctions on eBay:

Sonos Play1 Compact Wireless Music Streaming Speaker (Black)

$115.00
End Date: Thursday Oct-25-2018 17:01:20 PDT
Buy It Now for only: $115.00
Buy It Now | Add to watch list

Sonos Playbar Soundbar Wireless Speaker for Streaming Music Sound Sound Bar
$399.99
End Date: Sunday Oct-14-2018 11:30:04 PDT
Buy It Now for only: $399.99
Buy It Now | Add to watch list

Bluesound Pulse P300 Wireless HiFi Streaming Music System - White
$300.00
End Date: Thursday Oct-25-2018 18:56:31 PDT
Buy It Now for only: $300.00
Buy It Now | Add to watch list

Polk Audio - Omni P1 Wireless Audio Adapter for Streaming Music - Dark Gray
$64.99
End Date: Thursday Oct-25-2018 7:00:15 PDT
Buy It Now for only: $64.99
Buy It Now | Add to watch list