Oops, typo. I meant LG, not LX. I do see a C8 sold directly by LG on Amazon for $3499: https://www.amazon.com/LG-Electronics-OLED77C8PUA-77-Inch-Ultra/dp/B079TT1RLY
I do have sound already, so don't care about bad TV sound, but thanks for the warning.
Thanks for the reply. I feel a little more comfortable seeing you say they'll look better overall, despite the disadvantages in black level and motion.