EFS is ridiculous cheap if you use it the way it's intended. It's billed per-byte so you only store things that you actually need shared on there.
If you're looking for an OCFS2 replacement for storing large volumes of data or to run something like Oracle RAC atop then you're probably better off either doing it yourself.
> Moreover, AWS services in general are ridiculously expensive for what has always turned out to be a sub-par experience. Overly complicated to set up and manage, lacklustre performance, and premium pricing. Thanks, but no thanks.
Besides the pricing argument, I'd disagree with all of those points. It's a joy to set up once you know what you're doing and performance is more than adequate for all the services I've used (with plenty of knobs to fiddle). Outside of external bandwidth pricing I don't even consider it that far out of line pricing wise.