We have already discussed about the benefits of registration. You have the option, every time a new user registers, to charge a registration fee. However, during certain periods, you can waive the fee to boost user registration.
From the User Sign-up Fee (Admin Control Panel -> Fees -> Fees Management -> General -> User Signup) menu set:
User Sign-up Fee
Enter the amount to be charged when signing up to the site.
Note: Leave empty if opting not to set a signup fee.
After completing the registration select one of the available payment methods to pay the signup fee (if enabled).