If your event has a fee... then the payment selection page will be used unless you offer ONLY PayPal or ONLY Authorize.net as payment options. As long as there is something to pick from, that page will show. With Pay Later, even if that is your only option, you'll still get that screen so you can pick from the pay later options you have selected. Even if you only have one pay later option, that screen will still show, but that is something we are looking to change.