A flat fee for the act of a human getting the data onto the physical medium ($200) + the cost of shipping (<$100?) + $15 per day you keep the snowball device past the first + price per GB of data you're transferring ($0.03 per/GB).
So if your getting out 30 TB of data that's $200 + ~$100 + ($0.03 * 30000) = ~$1200
A flat fee for the act of a human getting the data onto the physical medium ($200) + the cost of shipping (<$100?) + $15 per day you keep the snowball device past the first + price per GB of data you're transferring ($0.03 per/GB).
So if your getting out 30 TB of data that's $200 + ~$100 + ($0.03 * 30000) = ~$1200