I’ve read multiple times that the eye-trackers for the Vive cost only 150$ so we are being ripped off. Just read the explanation, these are neither 90° eye-trackers nor are they sold in the volume HTC will reach. Some basic understanding of the economics of R&D and scale would really help get this kind of discussion into a completely different shape.
And what is the point of Kickstarter ? Letting a company do everything to make it keep its promises or rather provide capital for a start-up to get their initial funding to establish a sustainable product offering on a commercial market aftert the KS campaign ?
Spoiler - it is the latter.
Of course you have to beware of abusive use of KS promises, but I honestly cannot see Pimax having abused this. They kept most of their promises to a greater degree, albeit with delays.
They had the choice of abandoning eye-tracking, introducing a cheap but largely useless version or going for the high-end version. The chose for the last. Just as they chose for 200° (170°), now 2x4K etc… It is their general approach, and not aimed at ripping off the backers.
This attitude, to aim for the rather high-end version of available options is exactly what drew my attention, and attracted me enough to lay 1,700$ on the table during the KS campaign.
They are clearly amateurish to some degree, but the intention to boldly go where Valve, Oculus and HTC don’t have the guts to go is great! And it is not always to their advantage, if they make design changes - the upscaler in the 8KX will come for free to backers, although it was not part of the KS offering at the time. But again they wanted to make their product a better product.