They have this in 2 places. I got one from each..
They have it on Ebay for 19.?? free shipping He list it as an 18650 only light, but if you noticed he sends you an adapter to use it with an 18650 cell. What you need an adpapter if it is a true 18650??
After looking at it, is the same on on dealextreme, and it run a 26650 and a 18650. To be sure, go with the one on dealextreme, because they do advertise it to be for 26650 and 18650, whereas, the one on Ebay, says only 18650 and could be tight with a 26650.
BTW, the light is bright! Real bright!
http://www.ebay.com/itm/110860011474...84.m1423.l2648
they have it a dealextreme too. $25.10 free shipping.
http://dx.com/p/new-260-cree-xm-l-t6...x-26650-121481