Yes, brave name choice. I went to have a look and the home page is nice, well laid out, and has links to documents. Small free tier to put your feet in the shallow end, and a couple of monthly plans, one aimed at individuals and the other at orgs. Perhaps a family plan would have benefits?

Alas no linux support, not even an api to allow the use of some terminal command to get round GUI fragmentation. Searching for 'sync online storage with linux' leads to a recent redit thread and a Mint Linux forum thread.