Run in development mode

Using two shells, in the first shell run

$ python manage.py runserver

In the second shell run a debug email server

$ python -m smtpd -n -c DebuggingServer localhost:1025

If you want to use billing system you will need Paypal account https://developer.paypal.com/

Note

For paypal payment you will need a public access point see https://ngrok.com/ for secure tunnels