Do you think that high-end devices (with a price of around 1 000 USD) justify their higher price when compared to mid-range devices? Obviously, the answer depends on which specific devices you're comparing, but I'm speaking in general terms.

I don't have any personal experience with robot vacuum cleaners (which is why I'm making this post), but my answer (after hours of research) definitely leans towards 'no' (unless money isn't an issue or you're looking for a very specific feature). High-end devices don't appear to perform significantly better, you're mostly paying for some quality of life features, marginally better performance, and the branding -- or at least that's my impression. Pretty much analogous to mobile devices.