Enthusiast/professional quality flashlight. Not a poorly-made Chinese knock-off. Genuine measure of lumen output. There is no better deal if you want a flashlight that goes over 1500 lumens. To put it in perspective, your phone will likely never have more than 60-80 (using the brightest phone light, the new Galaxy Note 4, as a reference).
-2p per lumen
-18650 batteries likely NOT included *cheap as hell to buy, you actually have these in your laptop)
-It's shaped like a Coke can, so what more could you want?
Note: if you have no need of a flashlight that does this much, then it's not a good deal for you, that doesn't make it a bad deal for someone else.
Note also: Cheap Chinese knock-offs like the following do not have an honest lumen rating. This piece of garbage will never get over 1000 despite claiming 8000 and the ludicrous power consumption and numerous old LEDs it uses:http://www.amazon.co.uk/Trustfire-Searchlight-High-power-Bright-Flashlight/dp/B009YVYFES/ref=sr_1_1?ie=UTF8&qid=1419000410&sr=8-1&keywords=8000+lumen