I'm also absolutely hate the Chrome Marketplace for prohibiting the existence of such tiny use cases (although kind of understandable)
But I'm also aware that Azure can't be that cheap. And thankfully, the repo includes a description of the catch:
> Restoration: For 1TB, this will cost about $100.88 (rounded up). Small price for salvation.
For those who don't know, Clouds separate costs based on readiness (Hot, Archive) and operations (Read, List, Write), unlike Google Drive, which has fixed pricing per TB
So, this makes use of the Archive's low cost, which won't work well for backup use cases that require random access (such as looking up an old photo), but will be great for an additional backup that comes after a local hard disk backup.
Great solution though! Maybe with some adjustment someone can make it Support random access in the future (making an index to restore a single file to "Hot Storage" again)