I am using @obsidianmd local so no synchronization. But if I would decide to enable synchronization hosted by the wonderful people of #obsidianMD, the price is keeping me away. 8$ is not appropriate. Way to much.
I love Obsidian and the people behind, but not their pricing policy.
If you use Cryptomator (free and open source), you can transparently encrypt all your data before it arrives in the cloud.
https://cryptomator.org/