Sound information Danny, I too when I started my Amazon quest didn't see a single sale until 2-3 months of consistently tweaking and monitoring, but I think most of us stress too much on the site creation process and trying to make this authority site to become successful. Everything in a nutshell boils down to the click and that zon cookie being placed on the visitor or "clicker" who then purchases something (anything) doesn't even have to be a product your promoting or it could be someone else who jumped on the same PC with the cookie planted and purchased something.
Which leads me to believe that it's all about the volume of traffic you have and people clicking to get that cookie dropped, I mean your site could be total BS and someone clicked something and BOOM, cookie planted, which then leads me to believe that focusing too much on site creation is what stifled my growth when in fact you could use the damn default WP theme and throw some products up and just get targeted traffic to click, once the cookie is planted, your work is done, if they purchase or anyone purchases something from amazon in 24 hrs you get your commission.
I mean I understand the need to have a decent looking site, it could drastically decrease your bounce rate, and have users clicking multiple products but the truth is you only need 1 click and 1 purchase for the visit to be successful. I sold alot of products that I had listed on my site but some of my multiple sales days were products not even affiliated to my niche which is attributed to the cookie. I'm tempted to stuff, but I think long term, the success I could get from stuffing would be short lived and not worth damaging my aff relations with Zon.