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/
After reading those pages, I think you're wrong, and the $200 is actually per-device.
For one thing, the documentation says you can use multiple Snowball devices, but carefully tiptoes around saying whether or not there's an extra charge for doing so. All of the language that actually talks about pricing just says "the device", singular. For another thing, the screenshots of the "create a job" workflow are missing any way to specify that you want multiple devices. It sure looks like one job == one device.
(This reminds me of the pricing issues around AWS's Glacier service. It's not even that the pricing model itself is bad -- it's that the marketing is obfuscatory to the point of being arguably deceptive.)
