Amazon has 55″ LG 55SM8100AUA 4K UHD HDR Nanocell LED Smart TV w/ AI ThinQ (2019) on sale for $436.99. Shipping is free.
Specs:
Resolution: 3840 x 2160
Refresh Rate: TruMotion 120Hz (60Hz Native)
HDR 10 Hybrid Log-Gamma (HLG) 4K Active HDR
802.11ac Bluetooth 5.0
Google Assistant Alexa ready
Connectors:
4x HDMI
2x USB 2.0
Composite video/audio input
Ethernet
Digital audio output (optical)