Yes, both Google Drive and Flows offer a Free Trial.
Google Drive is designed for Large Enterprises, Medium Business and Small Business.
Flows is designed for Individuals, Medium Business and Small Business.
The starting price of Google Drive begins at $8/User/Month, while pricing details for Flows are unavailable.
Some top alternatives to Google Drive includes CollaborateCloud, Odrive, CloudFiles, Dropbox Business, Zoho WorkDrive, FileCloud, Microsoft OneDrive for Business, Dropbox Professional, DocUp and OpenDrive.
Some top alternatives to Flows includes Amazemeet, Lucid Meetings, Minute, Meetric, Tidycal, Meetgeek, Meetingbox, MeetingBest, Topicflow, Planist and sales-i.
