Do they charge for actual bandwidth as well? Seems like it. From tarsnap.com:
> Tarsnap uses a prepaid model based on actual usage: Storage: 250 picodollars / byte-month of encoded data ($0.25 / GB-month)
Bandwidth: 250 picodollars / byte of encoded data ($0.25 / GB)
> Tarsnap uses a prepaid model based on actual usage: Storage: 250 picodollars / byte-month of encoded data ($0.25 / GB-month) Bandwidth: 250 picodollars / byte of encoded data ($0.25 / GB)