Amazon has the Hisense U6 Series 58U6HF 58" 4K QLED UHD Smart Fire TV (58U6HF, Black) for $320 with free shipping. List price: $550. 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.

Amazon has the Amazon Fire TV 4-Series 4K50N400A 50" 4K HDR LED UHD Smart TV (4K50N400A) for $300 with free shipping. List price: $444. Features 3840x2160 (4K) native resolution, HDR10, HLG 3, HDMI 2.0 + 1 HDMI 2.1 with eARC, Fire TV OS (with Alexa and access to Netflix, Disney+, Hulu, and more).

Has excellent Amazon Reviews.