eBay with Five-Star-Buy has the Samsung Q800T Series QN75Q800TAFXZA 75" 8K UHD HDR Smart Quantum Dot LED TV (2020 model) for $2369 with free shipping. eBay with Echo-and-Optics has it for $2374and may accept a lower price via the "make offer" feature.
7680 x 4320 (8K UHD), Direct Full Array 24X, HDR10, HDR10+, HLG Support
Built Wi-Fi, Ethernet, built-in Alexa/Bixby, Adaptive Picture, 4 x HDMI
Buydig.com has the Samsung Q70T Series QN82Q70TAFXZA 82" 4K Ultra HD HDR Smart Quantum Dot QLED TV (2020 model) for $2198 with free shipping. Includes a $600 Visa Gift Card with purchase (3-6 weeks for delivery).
3840 x 2160 (4K UHD), Quantum HDR / HDR10, HDR10+, and HLG
802.11ac, BT 4.2, built-in Alexa & Bixby, Dolby Digital Plus, 4 x HDMI