In A Fire Upon the Deep, the Skroderiders' cargo was a one-time pad.
If you send someone several TB of random data on hard disk, you can now very securely send them several TB worth of encrypted data. It's many years of audio of reasonable quality, 1tb is about 72 days of raw 44.khz 16 bit stereo audio. With some speech codecs, that could be years of voice data. One time pad can be bigger than a notepad.
What do their prices look like for 100 pb?
It's probably not bad compared to the monthly recurring you're about to get hit with for sitting in all of those bits.
Certainly less than they would charge you for the bandwidth if you sent them over the wire.
For when your forklift migration needs a literal forklift.