Amazon has the Amazon Fire TV 4-Series 4K55N400A 55" 4K HDR LED UHD Smart TV for $320 with free shipping. List price: $520. Features 54.6" 3840x2160 (4K) native resolution, HDR10 & HLG, 4 HDMI ports, Alexa Voice Remote, Fire TV OS (with access to Netflix, Prime Video, YouTube, etc).
Has excellent Amazon Reviews.
Amazon has the TCL Q6-Series 65Q651G 65" 4K HDR QLED UHD Smart TV (65Q651G) for $348 with free shipping. List price: $550. Features 4K resolution, HDR10+, HLG, HDR10, Google TV Smart OS, Google Chromecast built-in, Amazon Alexa, Google Assistant, and Apple HomeKit compatibility, 3 HDMI ports.
Has good Amazon Reviews.
Amazon is offering Up to 38% off Samsung TV & Soundbar Deals including TVs, soundbars, and TV/soundbar bundles. Shipping is free for Prime members or on $35+.