Sat, 03/30/2024 - 07:04 Tech Insider San Francisco-based startup Cosmic is selling 100 prefab ADUs starting at $279,000 each in hopes of using the profit and a recent funding round to improve its manufacturing process and decrease the cost of its tiny homes.Cosmic Tags Real Estate, Tech, ADU, prefab-homes, tiny-home, real-estate, affordable-housing, wealth-news, cosmic Source A startup's solar-powered backyard tiny home can help power the main house — se…