Hi,
You can check requester pays set on your S3 bucket either by right click option then select
"Update Bucket's Requester Pay --> Set" or from bucket toolbar choose option
"Advanced --> Requester Pays --> Set", then if requester pay is set on it then it will prompt message as "Requester Pay has already set on bucket- bucket-name".
To read more about requester pay refer page-
http://www.bucketexplorer.com/documenta ... -pays.html