Amazon has the TCL 55R635 55" 4K Dolby Vision HDR Smart Mini-LED QLED TV (2021) for $400 - $50 off coupon (click checkbox) = $350 with free shipping. Features 3840 x 2160 (4K UHD), HDR Pro Pack with Dolby Vision, 240 Contrast Control Zones, Variable refresh rate up to 120Hz, THX-certified Game Mode, Roku OS, 4 x HDMI.
Amazon has the TCL 55R635 55" 4K Dolby Vision HDR Smart Mini-LED QLED TV (2021) for $400 - $50 off coupon (click checkbox) = $350 with free shipping. Features 3840 x 2160 (4K UHD), HDR Pro Pack with Dolby Vision, 240 Contrast Control Zones, Variable refresh rate up to 120Hz, THX-certified Game Mode, Roku OS, 4 x HDMI.
$350
Amazon has the Hisense U6 Series 58U6HF 58" 4K QLED UHD Smart Fire TV ( 58U6HF) for $350 with free shipping. Features 4096 x 2160 (4K) resolution, Dolby Vision HDR, HDR10, and HDR10+, Fire OS, 4 HDMI ports, USB ports. #1 Best Seller in QLED TVs.
Has good Amazon Reviews.