That was my first thought as well. There are tons of file sharing services that already exist, but I think their advantage here is allowing people to send files larger than 20GB. Using DropBox, the limit is 20GB or smaller.
Absolutely we don't try to hide that information you can try out our file transfer calculator here https://www.masv.io/file-transfer-calculator/ - This compares MASV to shipping hard drives and uses real rates from the fedex api. The way I like to think of it is it's much more convenient to transfer online instead of shipping hard drives as there is just less to deal with and it's harder to scale. So if MASV is faster or not much longer then shipping a drive or hand delivering then it's time you can spend on taking on more projects.
You got it. In general you can send as much or as little as you need with MASV because it's pay-as-you-go which means you don't have to manage fixed storage and it scales up and down with your work. If you don't use it the next month it costs nothing.
Never underestimate the bandwidth of a station wagon full of tapes hurtling down the highway. - Andrew S. Tanenbaum
s/station wagon/"40 foot trailer";s/tapes/disks