Assuming hes not wrong about how much the LED costs, looks to be about £30 so roughly the same but I guess you get the added bonus of building it. Prob better to just buy off the shelf though...
similar sort of idea, looks awesome and a similar build and lumination with the 4 16850 cells.
it takes some shit to light middleton up..last I was there Maniac brought this along ..bit like Ghostbusters