I don't care what it costs - it should work.
>It's not Microsoft's fault that Asus decided to sell a cheap, untested, poorly-built device.
Microsoft probably wouldn't be able to prevent Asus from selling it outright, but it could refuse to sell it through MS Store or giving it a 'signature device' branding.
> it should work > refuse to sell it through MS Store > It works.
> MS is probably bound by some partnership agreements so it cannot refuse