LG VR 360 For LG G5 £37.95 Dispatched from and sold by FoneJoy / Amazon

VR headset for the LG G5 (possibly other LG phones with usb c?)

Yes it gets some mediocre reviews.

Yes it is niche product, in terms of products it works with.

But it is a dedicated headset with its own dedicated screens and processing AND at this price it's as cheap as those off brand headsets, with rubbish optics, that you put your phone in.