Ok, so they're extremely expensive vibrators. They're even more expensive than any vibrator I've seen from the sex toy industry, so I don't really see the point. Really it would have to be some kind of elaborate, multi feature fucking machine to justify such a high price.
Just about every expensive vibe claims it's the "ultimate" vibe.
And most who spend a small fortune on a vibe will say it's the best thing ever, if only to justify the expense to themselves.
You could buy a selection of really good toys for $140/80 pounds, or this one really expensive vibe that isn't all that versatile (and you may or may not actually like).
If you have money to burn, you might as well try it, I guess, but if you want to stretch your money and enjoyment, you can do a lot better with other toys, IMO.