Thank you for posting in the forums! Amazon Mobile Ads network earnings are paid per ad impression, rather than per a click. Various advertising campaigns move through the Amazon Mobile Ad Network and they all have various cost structures. For example, some advertising campaigns are structured so that the entire media cost is charged to the advertiser and therefore a revenue share cannot be calculated. Our goal is to match the best advertisements to users to help developers maximize their earnings, to help advertisers reach their goal, and to help users discover useful information.
For further information about Amazon Mobile Ads, please see: https://developer.amazon.com/public/apis/earn/mobile-ads