Simple Student Quiz Website Development

I need a freelance developer to create a simple website where students can register, purchase quizzes and receive performance evaluation. The site should be user-friendly and efficient, with a clean design.

Key Features:
- User Registration: A simple, secure registration process for students. This should include basic details for identification and login.
- Quiz Purchase: There should be a mechanism for students to pay for and access various quizzes on the site.
- Performance Evaluation: After each quiz, students should be able to view their performance in their profile.
- Payment Gateway Integration: The website will require a payment gateway to facilitate the quiz purchases. The payment process should be secure and seamless.

I'm looking for a freelance developer with experience in:
- Developing websites with user registration and payment gateways
- Implementing profile systems that can store and display user data
- Ensuring a smooth and bug-free user experience

Please provide an estimate of the cost in INR for developing a website with the above features, and specify the timeline for completion.