Re: ITS A TRAP!!!
Funny thing, when I zoom in on the photos of the "Discoball" flashlight, I can see "Ultrafire" on the side.
If the pictures can be believed, it's price may be fairer than foregoing posts suggest. That's because the pictures show the Discoball in a kit that includes flashlight, holster, battery, charger (with USB cable and car-lighter adapter), and a carrying case for all of it. The product details, however, on the same web page at Amazon, list only the flashlight.
In case you do get a charger and battery, you should be aware that they may be the kind that most CPF members avoid. Any 18650 battery brand with xxxx-Fire in the name is hit and miss. Many have proven to be fakes. Chargers carrying the xxxx-Fire brand can be equally problematic. See the charger reviews by CPF member HKJ. In my opinion, you are better off getting a charger from Xtar, Nitecore or Opus.
If I received an xxxx-Fire battery and charger, I would not use them.