I can't recall storage costs (they're on the website somewhere but are not straightforward).
I was paying maybe $7 a month for a few hundred Gb, although not all of that was glacier.
But retrieval was a pain. There's no straightforward way to convert back from glacier for a lot of files and there's a delay. The process creates a non-glacier copy with a limited lifespan to retrieve.
Then the access costs were maybe $50 to move stuff out.
I moved to rsync.net for the convenience and simplicity. It even supported setting up rclone to access s3 directly. So I could do cloud-to-cloud to copy the files over.