LG has unveiled what it calls the "best prices of the year" on its OLED TVs sold through its site and authorized dealers in the US. It includes no less than US$2000 off one 77-inch model, and a 55-inch SKU that now goes for just $1199. These deals take effect today (November 27, 2019) and last until December 2.
https://www.notebookcheck.net/LG-announces-its-Black-Friday-sale-on-2019-OLED-TVs.444877.0.html
I don't think the price of base tier OLED models has fallen in recent years, the price of B and C series might have been last Black Friday's, or the one before, or the one before that.