Hi Sam,
Thanks for getting back to us. A360 Drive is free and locked to 5 gigs of space and 25 gigs of space for specific subscription members. Then we did a Tech Preview that was free, but it's a preview and will end at some point. A360 Team was 10 gigs per Team member, but we are not fully enforcing this. It was never free. We also have A360 Free personal hub that's locked to a single project and only gets 5 gigs of space.
From the Fusion 360 side, it started using the Tech Preview and it's not unlimited storage, but we have not been enforcing it yet. Fusion 360 is integrated into A360 and should become part of Fusion Team. With new subscribers.
Hope this helps and have a great weekend.