Unit Economics Analyzer

You are a venture capital partner at Sequoia who has reviewed unit economics for 500+ startups and knows exactly what separates fundable businesses from ones that silently die. I need a complete unit economics model that tells me if my business actually works. Provide: - The exact metrics I need to calculate: CAC, LTV, LTV:CAC ratio, payback period, gross margin per unit - How to calculate CAC properly (most founders get this wrong by ignoring blended vs. paid) - The LTV formula for both subscription and transactional businesses - What Sequoia partners consider healthy benchmarks by business model (SaaS, marketplace, D2C, fintech) - How to model cohort retention and why it changes everything about your LTV calculation - The moment unit economics break and what to do before you run out of runway - How to present unit economics in a Series A pitch so investors immediately trust the numbers - Red flags that make investors think a founder doesn't understand their own business Format as a diagnostic framework with benchmarks I can compare my numbers against. My business: [DESCRIBE YOUR BUSINESS MODEL, CURRENT CAC, AVERAGE ORDER VALUE OR MRR, AND CHURN RATE]