> It would cost the guy $5000 a month to store his data on S3 and he doesn't want to pay that
The standard S3 tier, sure, but Deep Glacier would be about $250/month. Retrieval can be up to 12 hours but that shouldn't really be a problem for long term archiving. As with anything AWS, egress can kill you, but you can sidestep that with something like Snowball, and really that's only an issue if you need to egress everything to migrate the archive.