One suggestion is to have your pricing page show a random price, but after the user clicks "yes please" you tell them immediately that "actually, we are having a discount today to $8", telling them the lowest price of the bunch. The danger with this is that if people find out about it, it could taint your test as they know that the displayed price is not the price they will be charged at the end.
I'd be interested to hear if people have any other good ways to tackle this. The only things I can think of ad extra variables to the equation (tainting the a/b test) e.g.: write "limited time offer" next to the cheaper prices, or run the different prices on different days.
http://news.cnet.com/2100-1017-245631.html
One suggestion is to have your pricing page show a random price, but after the user clicks "yes please" you tell them immediately that "actually, we are having a discount today to $8", telling them the lowest price of the bunch. The danger with this is that if people find out about it, it could taint your test as they know that the displayed price is not the price they will be charged at the end.
I'd be interested to hear if people have any other good ways to tackle this. The only things I can think of ad extra variables to the equation (tainting the a/b test) e.g.: write "limited time offer" next to the cheaper prices, or run the different prices on different days.