Prices for the 34-inch QD-OLEDs will most likely be higher than what LG will charge for the 42-inch OLED TVs, but Samsung's screens will at least offer superior PPI and crisper text through the RGB pixel structure plus increased color volume via the Quantum Dot layer.
https://www.notebookcheck.net/Samsung-will-launch-34-inch-ultrawide-QD-OLED-gaming-monitors-next-year.582091.0.html