Skill Course Marketplace with E-Commerce

I am building a full-stack web application where instructors can publish and monetise skill-based courses and, from the very same page, offer complementary products—primarily physical kits plus books or other printed study materials... (Budget: ₹1500 - ₹12500 INR, Jobs: eCommerce, Full Stack Development, HTML, Next.js, Node.js, PHP, PostgreSQL, Website Design)