Some of my sites have CJ banners targeted towards the site's subject manner. There is no pre-sell for the offers...just banners. Despite banner blindness my CTR is in the high single figures. However I am getting no sales for these clicks. Shouldn't some of the people who click through the banner make a purchase once in a while?
it's normal, not all the people buys. normal 0.1% to 10% of sale will happen after people click and... you also need note about the GEO problem. don't send UK visitor to a US site that only deliver US