I got mine 2nd hand on eBay as new old stock. £300 for a 55" 4K panel. The only thing I can ding it for is that the backlight local dimming is done in columns which is extremely distracting, so I turn it off. You have to remember this thing is designed to sit in a shop window in direct sunlight.

Ticks all my other boxes though, powers on as soon as my finger leaves the button on the remote, same with input switching and any other interactions with the OSD. Its completely braindead, just how I like it.

Oh, they also sent me the model with the touch digitizer installed. So I've got capacitive touch and pen input, it has a USB-B port on the side to connect to a computer.