I've written glacier integration with git-annex and it's fully functional. Details in [2]. The Glacier retrieval pricing uncertainty just means that I store les

I've written glacier integration with git-annex and it's fully functional. Details in [2]. The Glacier retrieval pricing uncertainty just means that I store less in Glacier - but for critical data where the paid retrieval cost is worth it, I happily "git annex copy --to=glacier".