Generate a full detail guide on creating a 'Value Ladder' for a service-based business. The guide must be strategic and practical. It should include: 1. A clear explanation of the value ladder concept. 2. A step-by-step guide to mapping out your own ladder, starting with a free lead magnet. 3. How to design a low-cost introductory offer to convert leads into customers. 4. Strategies for upselling customers to your core and premium high-ticket offerings. 5. Examples of value ladders for different industries (e.g., a coach, a web designer). Please include a disclaimer.