Yeah the Manker headband costs extra and is supposedly not taht nice, and I believe that the light itself is heavier (despite being 1aaa) than the 1aa headlamp that I linked. It is brighter though. I'd tend to go for the 1AA for Doug's kit since he wants something cheap, and you get much more battery energy for just a tiny bit more weight.

For Manker discount codes, try also the links from here: https://budgetlightforum.com/node/55867