We appreciate so much your constructive feedback! Our product Instapower costs 25 $ for building and packaging and we sell it for 40 $. Thank you for sending us the link of this competitor as well. Although Instapower and powerpot turn heat into electricity, there is a difference between them. Actually Instapower works with a different concept which is a Stirling engine and not a thermoelectric component. Also, it is affordable compared to powerpot which is expensive. And the most important point that our product is adapted to our customers lifestyle who use fire on their daily basis. You can use it based on only fire nd not water nd fire to generate the same amount of power. Don't hesitate to contact us for any further details.