I brought one during our latest summer vacations, we had terrible weather so the four of us had plenty of time to try to solve it.
Nobody succeded! I could finish 2 sides and then it was total chaos.
Later I met a Rubik's cube collector in UK (also very fast when he solves it) and he told me that it's quite hard to find out by yourself how to solve it.
Some version of this cube are highly collectible apparently.
A few weeks ago I found this on a flea market, that's a sign!
