Two global domains related to entertainment and devices with Android OS for sale or rent:
AndroidTV.store (OS / sale of Android TVs or other devices / applications on Android TV / TV Box ect.)
AndroidTVBox.store (sale TV Boxes/other devices / applications on TV Box ect.)
Direct purchase possible via sedo.com or via dan.com also in installments.
If you are interested in long-term rental, please provide info in a comment