I bought one of these for $13.50, and free shipping. It's a beast, and the battery lasts a very long time. I also bought one of those beam shaping lenses for $5, and it throws a really bright, well shaped beam...... Hard to beat for a total less than $20 ... I might buy another just for the battery.

2000LM CREE XM L2 T6 LED USB Headlamp Headlight Bicycle Bike Front Light Torch | eBay

I thought I bought mine on Amazon, but can't find it..... aha, here it is http://www.amazon.com/gp/product/B00...A3CHKVEURCLOPX

but a few months ago it was $13 and free shipping - might pay to wait.

Aha, because I bought the old style, 2 mode plus strobe. and it came out of China (shipped)