Warning about Amazon Ads!
I've been getting monthly e-mails from Amazon telling me that I wasn't going to be paid yet for showing their ads because I hadn't met the minimum, but that the total would be rolled into the next month. I am no longer showing Amazon ads, so I requested that they just pay me what is due. They refused, saying they can't unless I meet the minimum. They will only pay if I meet the minimum or close my developer account. They actually suggested I start using their ads again and make enough to get paid. But that's not going to happen because their ads performed miserably for me and Admob has been doing terrific.
Anyway, just thought I'd let people know in case you're considering using them.