Website with API integration and many more. Advanced website

Carefully read before sending a quote. My prize is also fixed!

Build me a website like BrickEconomy and add the sell/buy function from StockX.

This project will contain:

Multiple API(s) integrations(don't know how many we have to integrate)
Payment gateway integration
Two user types(admin/user):
In user type there will be a separate profile where user can track their collections and see the growth of their collections and can analyze the market just by seeing the statistics enlisted on the website(which will require AI/ML)
Implementation and many more features like that.

It's important to understand the website brickeconomy very well because it's a similar site that I want, with the extra of buy/sell/bid/ask like StockX

Deadline: 1 month