Yes, both pCloud and Box offer a Free Trial.
pCloud is designed for Freelancers, Medium Business and Small Business.
Box is designed for Large Enterprises, Medium Business and Small Business.
Pricing for pCloud Starts at $3.99/Month whereas for Box Starts at $5/User/Month when Billed Yearly.
Some top alternatives to pCloud includes CloudFiles, Sync.com, Dropbox Business, Google Drive, FileCloud, Microsoft OneDrive for Business, Dropbox Professional, IDrive Online, OpenDrive and Icedrive.
Some top alternatives to Box includes CollaborateCloud, Microsoft SharePoint, Dropbox Business, FileCloud, ownCloud, Microsoft OneDrive for Business, Dropbox Professional, Citrix Content Collaboration, Genialcloud Facsys and Box Skills.