Unless you're some kind of prodigy who can solve one while juggling, making pancakes and whistling Dixie, the Rubik's cube is already difficult enough. So why on earth would someone go and add a numbered, spinning dial to each side? That's just sadistic.
You could argue that Brando's $US80 Roulette Wheel IQ Cube is actually a simpler version of the standard Rubik's Cube, since it only features four segments per side. But it's the addition of that dial that takes the difficulty level from child's play to Mensa challenge.
However, no matter how scrambled it might become, as long as these manufacturers keep cheaping out and using decals instead of paint, it's just a couple of hours of peeling and re-sticking to easily 'solve' it again.