S3-Infrequent Access Retrieval Fee for Range requests.

A Customer needs to iterate over ~250 millions audio files in S3-IA. He wants to extract Metadata which hasn't been stored initially.

The fees for retrival apply $ per GB and $per 1,000 requests

I want to confirm that if they use the Range option of the get object to download only the first part of the files (i.e.1MB of 120MB) they are charged for the number of requests and the data actual retrieved (1 MB) and not for the size of the requested object.