People use BSCpro to sell tickets to their event. If you are trying to purchase tickets to a specific event, you will need a URL that looks something like: 

bscpro.com/event/wealthbowl2015 (this is a non-working example)

Every event has it's own custom address, so you need to ask the event coordinators what it is to get to your ticket purchase page. They will usually start with bscpro.com/event/...

Once you have found it, you simply enter the url in your browser, fill out the form, and enter your credit card information to purchase your tickets and you will receive an email confirmation and receipt.