When you go to the website, chrome may complain about the security.
I haven't figured out how to get rid of that warning.
For checking out payment functionality, keep typing 42 on the card input field:
4242 4242 4242 4242 ...
The application has everything that regular e-commerce application has. It includes authentication, products, checkout, payment system and very similar design to actual amazon website.
Site is live at https://clone-1764d.firebaseapp.com/