I bought the Fox Flux from a friend's shop and he usually charges me a small token profit apart from his cost price and at that time (3 years ago) it was 220 bucks. He's selling it at about 300 bucks. Then a few months later, they were selling at RM150 in BBS. Then there was a deluge of Fox's helmets in BBS and also sellers., all selling at half or three quarter of the original price. It was all replicas from China. Anyway Fox's helmets are quite heavy compared to others, maybe it is more protective. Also take good care of the plastic strap that is stuck to the foam, for mine, that plastic strip breaks first and I fabricate another piece using those plastic files. Still usable as spare as I have since changed to MET with kevlar straps. 

So, be careful when you buy Fox's helmets. One thing I noticed is original ones uses those push/clip kind of straps for adjustments while replicas uses the rotating type of mechanism. This is the original,