teraflop was right, it's $200 per snowball device job, which is currently limited to 50TB. Maybe that will change. You can order multiple jobs to import more data. You have 10 days to complete the transfer and ship it back and then it's $15 a day. $200 buys you 50TB per job, great encryption, and speedy migration. Sources:
https://aws.amazon.com/blogs/aws/aws-importexport-snowball-t... and
https://aws.amazon.com/importexport/pricing/