When released, iCloud will automatically give each user 5GB of storage for free (which isn’t going to hold much), after that you’ll have shell out a little bit of cash to get the storage you need. 10GB of storage is currently priced at $20/year, 20GB at $40/yeah, and 50GB and $100/year.
Storage options can be purchased within the Settings menu of any iOS 5 device. Pictures that you take stay in the cloud for 30 days, and do not count against your ultimate amount of storage.
What do you think about the pricing?