Building an online marketplace like Airbnb or Clarity involves several factors, including design, development, and ongoing maintenance costs. Since you don't have web development experience, hiring a professional team is a wise choice. For a detailed breakdown of costs and what to expect, I highly recommend reading this article: https://www.cleveroad.com/blog/how-much-does-it-cost-to-build-a-marketplace-website/. It provides comprehensive insights into the development and maintenance expenses, helping you plan your budget effectively. Best of luck with your project!