title: CloudFront: Cost estimate
body: <p>Have to come up with a proposal to use Amazon S3 with CloudFront as CDN.
  One of the important thing is to do a cost estimate. I read over AWS website and forums, used their calculator, but couldn't come to a conclusion with the final number (approx) that I will be confident of. Honestly, I got confused between terms like "Data Transfer Out", "GET and Other Requests" and whether I need to fill in the details both at Amazon S3 and Amazon CloudFront and then do a sum total.</p>
  
  <p>So need help here to estimate my monthly bill.</p>
  
  <ul>
  <li>I will be using S3 to store files (mostly images)</li>
  <li>I will be configuring cloud front with my S3 bucket to deliver the content.</li>
  <li><p>Most of the client base (almost 95%) is in US.</p></li>
  <li><p>Average file size: 500KB</p></li>
  <li>Average number of files stored on S3 monthly: 80000 (80K)</li>
  <li>Approx number of total users requesting for the file monthly or approx number of total requests to fetch the file from CloudFront: 30 Millions monthly</li>
  <li>There will be some invalidation requests per month (lets say 1000)</li>
  </ul>
  
  <p>Would be great if I can get more understanding as to how my monthly bill will be calculated and what approximately it will be.</p>
  
  <p>Also, with the above data and estimates, any approx on how much the monthly bill, if I use Akamai or Rackspace.</p>