The cost of developing a recommendation system depends on several factors, including the complexity of the model, the volume of data processed, the level of personalization required, and the integration with existing systems. A basic solution utilizing standard machine learning techniques may range from $5,000 to $50,000, while more advanced AI-driven systems incorporating deep learning, real-time processing, and dynamic personalization can cost between $15,000 and $100,000 or more. Additional costs may include infrastructure, data engineering, and ongoing system maintenance. The overall investment is determined by the specific business requirements, scalability needs, and desired level of customization.