The Login and Register shortcodes can be added to any page. The Login widget can be added to any sidebar.
Create an account and give this feature a test. Enter a valid email address to receive your credentials.
You can also login with Facebook, Google or Yahoo. As ADMIN you can enable 1, 2, 3 or no social Login options.
On this demo you can test PayPal payments with a PayPal Sandbox account.
In WP Estate you can turn paid submissions OFF at any time. You can also turn user submissions OFF at any time.