Got a whole bunch of testing ideas reading this, maybe you will too.
http://www.theatlantic.com/business/...t-math/259479/
Wow, very interesting! Thanks for the share mate 
That's a fantastic article!
Best story:
Awesome find!
Every marketer should also checkout Dan Ariely and his book:
http://www.amazon.com/Predictably-Ir.../dp/0061353248
This ted talk provides some good examples of how easily people are influenced when presented with options.
Brilliant TED talk indeed , a lot of it can be applied to our day to day split tests 
Mehdi
I tell this to people all the time - people who have a business, say, making and selling jewelry - If you're average item is $20, offer something at $200-300, even if you think no one will ever buy it. It always increases sales!
A lot of this stuff and more is written in the book "Predictably Irrational"... Really good read, teaches a lot about pricing and our (irrational and spewy, equaling more money for us marketers) reactions to it.
The math was way too confusing for me, I'm glad I don't drink anymore (lol)