I belong to the Portland Metropolitan Photographers Association and we have events where members need to register and make a payment. Since the www.pmpa.net web site is built with WordPress I was able to add a new feature using PayPal for payments where members choose between three different options and quantities:
When a member choose an option and quantity, clicks the Add button, they see the PayPal cart on a secure web page:
If they click Continue Shopping, then they are returned to the PMPA page that they started on. When they click Check Out then they can pay with Credit Card or PayPal.
Inside of WordPress they can choose where to place this new event registration using short code:
This is easy for the PMPA volunteers to add event registration to any Page, plus it's easy for members to register, a win for everyone.