I wouldn't want to be a guinea pig for what looks like a Chinese flea market website. It's filled with a lot of obviously cheap junk. I would assume that a real flashaholic promoter would find a credible way to bring their (likely exaggerated) "blockbuster" Xenon (not HID) searchlight to a credible location and subject it for reviews.
Over the years, there have been many spuriously represented lights promoted, and they depend on the average person not being able to measure or know about the actual output. Just the fact that this product has such a ridiculous set of choice wattage options immediately questions their credibility. Just think for a minute at the representation of 220W for $250...it lacks common sense.
When the Firefox FF3 & then FF4 came out, it had the presentation credibility from a respected member of this and another Flashlight forum, namely Lips that verified its performance. But then many people's battery carriers stopped working, and they were left with a dead HID light. Now with the FF5, there was some credibility from known earlier models, and the fact that Neil could get spare carriers for only $25, restored our willingness to drop the cash.
So in this example, if you are wealthy, and are willing to drop the money on a chance discovery, go for it...but there's too little credibility for my interest here. Also, there's not much more you are going to get beyond the 100W FF5 in terms of a useful performance.
Good Luck, Alex!