Currently I am sending buyers to Amazon when they click on the "Buy now" button. In other words it adds it to their cart and sends them off to Amazon.

I have debated using the QuickClick add to cart button. It would seem to keep them on your site longer. Since I am not selling books and trying to get that 15% option, I am not sure it really matters.

Has anyone done any testing on the two different methods? My sites are so new if I ran a test the results would not be two meaningful as the traffic continues to increase.