Tardigrade Size of file uploads

As far as I understand it, each file is divided in pieces of 64MB and those pieces get uploaded to different nodes.
Very small files get stored on the satellites directly.

So what happens when I store my backups on tardigrade with multiple files in the range of 1-60MB?
Will those get stored on nodes or the satellite? What is the size that determines if a file gets stored on the satellite or on a storagenode?
Am I paying for 64MB or for the actual file size?