Knockoff King

• Users with different roles (Buyer, Seller, Admin) should be able to login into their accounts to be able to perform different actions and logout.
• A buyer should be able to search, compare, buy and return different types of products from different sellers.
• A seller should be able to add, sell and receive payments for their available products.
• An admin should be able to approve/block new user accounts and products, and oversee different user actions.