I did! I'm using ResilioSync to synchronize across devices, including a cheap Hetzner server with a 6TB harddrive, and then use Secure ShellFish to access that server from iOS devices (while ResilioSync does have an iOS app, that one is too buggy to be useable)
How much is the 6TB Hetzner machine?
about $25 per month, depending on the current EUR/USD conversion rate. It's a machine from their "server auction" (https://www.hetzner.com/sb)
can't tell if this comment is in earnest or if it's another dig at the infamous top comment[1] for dropbox's HN launch announcement.