I’ve got these things locally available in the $50-60 range. This being a generic brand, I imagine a buncha those are available globally. Anyone tried 'em, do they work OK with modern desktops (gnome, plasma)? Touch? DP-Alt or are they DisplayLink? Do they have PD?
Sellers are helpful nada, same with youtube videos, just marketing fluff.
I have this one from aliexpress with touch and I use it with cheap surface-like tablet (Chuwi HI10 MAX) and sometimes with Windows 10 desktop or Samsung Dex. It works with one usb-c cable or with mini-hdmi and power cable, colour rendering is acceptable, view angles are great. Unfortunately, although touch works great on desktop I can’t configure it to work on linux tablet. As far as I know, it’s impossible(?) to have two proper touch screens with Wayland.