In 2015 HomeBiogas LTD (formerly Ecogas Israel Ltd) successfully sold their Homebiogas small scale biogas plant on Indigogo, they reached 207% in revenue and 270% by units. They offered different perks for different prices. You could buy one of their units from as cheap as 890 $. During that time their website stated that the actual selling price would be about 1500 $.
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