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Patrick Coddou launched Supply.co with his wife, Jennifer, back in 2015. The company, which sells razors and shaving supplies, is bootstrapped — no outside investors. He has little patience with the concept of lifetime customer value or paying more to acquire a customer than he can recoup on the first purchase. That approach has produced, in five years, a profitable, mid-seven-figure-revenue business that, until recently, had just two employees: Jennifer and himself.