but it’s cheaper than Bigscreen Beyond, for example.

Not sure if you're counting PC hardware cost or needed accessories, but the base pricing seems comparable especially Bigscreen being smaller+lighter+microOLED.

EDIT: Seeing now that the Bigscreen doesn't include controllers, and the Valve Index controller setup recommended (Knuckles+multi-base-station) is a significant cost. I guess technically you could still do a lot with just head-tracking and other peripherals (and maybe even other VR controllers?) but I see the point especially at this cost level.

No camera either so head tracking is still an issue and passthrough doesn't seem to be a possibility. So I guess without having anything else, it'd basically be a fancy monitor with eye-tracking. I'd say maybe one benefit would be ability to lie down, but this might be a quick way to get motion sickness depending on the content.