Amazon billed me ~$40 for debugging their service (problem: micro instances become completely unreachable after a few minutes, suggested course of action: spin up a few instances, tell us which ones they are, and we'll have a look). This does not seem like good support.
Two last paid support cases were closed after they identified a bug in their code and we found a more elegant fix than the hack suggested by them. We still had to pay for both.
I'm not impressed with aws support so far. Especially Elastic Beanstalk. Looking into OpsWork to take matters in my own hands.
