Originally Posted by Far-L

Getting the surfer there and into the site is the hardest and most expensive part of the process, even organic traffic is costly to generate. Keeping a member is a much cheaper and easier way to increase revenue. Many programs focus so much on traffic, and trying to throw sites/niches down to attract it that they lose focus of that aspect. (Not saying that is your case, since you obviously care about your user experience).

However, since you are focused mostly on the one time non recurring sale and with a focus on paying affiliates for the traffic, my guess is that only leaves you with slim margins to work with. Therefore, since you already have tested pricing, finding ways to make the site stickier seems a much easier path to better margins on the bottom line.