A vermicompost unit uses Eisenia fetida earthworms to decompose cow dung and agricultural waste into nutrient-rich organic manure in 45–60 days. Once established, the worm culture self-replicates- the initial worm purchase is a one-time cost. The unit produces vermicompost (Rs. 7–12/kg), vermi wash liquid fertiliser (Rs. 50–80/litre), and surplus worm culture (Rs. 400–600/kg). The business is genuinely sustainable- raw material (cow dung, crop waste) is essentially free or very low cost, and the finished product is government-promoted and in growing demand. Financial viability improves dramatically with scale- 60+ beds is the optimal minimum. GeM registration opens government procurement for organic farming programmes.