I have two Google Chromecasts I planned to use for an Airbnb unit that never came to fruition and are unused.
The power cord is an upgraded component I bought from https://store.google.com that includes an ethernet port for more efficient streaming. Only the red Chromecast has a box.
If you've ever used a Chromecast, it's an immense upgrade from most smart TV software. The Google integration is excellent -- you can use your Android phone as the remote control or use the remote control to voice control the TV. The Android phone Chromecast connectivity allows you to use the Netflix/YouTube/Hulu apps on your phone to select what content is playing on the TV.
I can sell both Chromecasts together or individually. Ideally $35 for each Chromecast and $15 for the ethernet/power cord. Will entertain any offers.