Price Pre-order discount price of $999.95 USD. The H2-Flex will be delivered in 6 months on a first-come-first-serve basis. Get huge savings on regular price of $1,650.85 USD. Your Name Your Email Country Enter the country you want your product to ship to. H2-Flex Water-Gas KitH2-Flex Water-Gas Hydrogen Hybrid Kit and CartridgeH2-Flex Water-Gas Hybrid H2-Flex Kit converts even dirty water into clean gas on demand.