This document discusses classic revenue models and pricing considerations for medical device startups. It covers sale of products, per procedure fees, rental models, and licensing. Recurring revenue models using razors and razor blades are favored by acquirers. Pricing should be based on customer value rather than costs. Market type and size affect pricing strategy, which must be diagrammed along with revenue streams. Key financial metrics include cash to reach milestones, break-even, exit and gross margin.