Media prices per Gigabyte DVD-R DL (5×8.5GB at 15GBP) ~38p External USB 2.5” HD (160GB at 80GBP) 50p Flash 5GBP Update 12/3: External USB 3.5” HD (600GB at 69GBP) 14p Update: 14/4: 4G SDHC for 9GBP – 2.25GBP per gigabyte