Is using iCloud free?
Yes, iCloud is free.
Basic Information About Moving From MobileMe to iCloud
Apple IDs and iCloud
Creating an iCloud account- Frequently Asked Questions
Frequently asked questions about the MobileMe transition and iCloud
MobileMe services that no longer sync after moving to iCloud
MobileMe- About moving to iCloud
Yes using iCloud is free upto 5GB on both Mac and PC. And after 5GB it can increased on chargable basis.
Retrieving data ...