Sierra Trading Post has some Princeton Tec Byte factory blems on sale for $9.95. I got a couple and can't find anything wrong with them. 1.4oz on my scale without the batteries (2x AAA).
http://www.sierratradingpost.com/mini-led-headlamp~p~4309j or search on "4309J"
If you care for such things, they have a sign-up promotion, where you get $10 off on a $30 purchase and I get get a credit when you buy something. Use http://www.sierratradingpost.com/invite~2567600/dale~wambaugh/