Depends if you are in a hurry to get it.
Check here :
www.dealextreme.com
Their Cree Lights section. Got that one, with 2x18650, charger, mount, shipped, for under 50$. They also have spare lens in packs of 10 for under 4$
http://www.dealextreme.com/details.dx/sku.17401
http://www.dealextreme.com/details.dx/sku.5819
http://www.dealextreme.com/details.dx/sku.5790
http://www.dealextreme.com/details.dx/sku.12594
There is enough choice for you to drool over for a few good hours.