sptyks,
There are many other vacuums which are that sort of price which people do pay big money for, and just because it looks like a felix, doesn't mean it is similar or just a pretty looking version.
It has a large brushless motor which is rare amongst vacuums, a special brushroll design with two separate brush rolls and a very well design and engineered tool kit, so all these things go along way to justify the price. No doubt it will last years and years as well, especially that motor, which only has one moving part.