My goal: find optimal UX/UI pattern.
Pattern's goal: give a user choice between two actions.
Simple example: http://dribbble.com/shots/599154-Choose-Your-Option
Here is UX/UI pattern I implemented (30 second video inside): http://www.screencast.com/t/5g7RqlsP9t3
Page details: in my case I had a page where users top up their accounts. There are two ways of doing it: payment (any method) and coupon activation.
Please, tell what you think about the design pattern I used on the page. Is it too complex? Is it not obvious? etc.