Apple today has unveiled the prices for iCloud additional storage.The basic iCloud free storage would let you store 5GB and you could upgrade to 10GB , 20GB or 50GB for an yearly fee.The additional storage on iCloud can be purchased from the settings of the iOS5 device.
The Pricing is as below…
US Dollars: 10GB for $20/year , 20GB for $40/year , 50GB for $100/year .
UK Pounds: 10GB for £14/year , 20GB for £28/year , 50GB for £70/year .
Euro: 10GB for €16/year , 20GB for €32/year , 50GB for €80/year .Source][via]