Except bullets cost money. Lifting 12kg on pulleys is not all that difficult....and it's free, unlike candles and kerosene. I have a candle sitting on the coffee and kitchen table at all times....never know when the power is going to go out here, batteries for flashlights are expensive and the cheaply made Chinese solar lights available here are not very reliable in my experience (and at 1k/light they ain't cheap....or even close to being a good value). Yeah, they still sell those here. I believe I've seen them at Handyman. Problem is they are next to worthless if you are doing something that requires both hands.....and I don't want to stand there and squeeze the thing while my SO is cooking. I'll admit that for someone like me it just boils down to me being lazy/cheap/forgetful. I don't want to buy batteries, I certainly don't want to keep a flammable liquid in or around the house (or have open flames in the house), I forget to buy more candles until it's too late.....and I certainly don't want to sit there and squeeze or wind up dynamos by hand. But for the people this thing was designed for (the extremely impoverished) this thing could provide them with something we all take for granted....light. I think the only thing that would keep people from using it would be if the retail price was too high. I haven't seen anywhere on their site that says how much they will be charging for one yet. This seems to be the only thing they aren't covering on their website, everything else looks good to me.