People's Park (the building with the SA tours upstairs and the CK shop on the ground floor) - ground floor (near the lift which is also near the entrance) I saw one Nokia HP at $38 dollars.
Make sure the camera you are buying is a 3G phone if you are presently holding a 3G phone with 1000 entries memory. Reasoning being non 3G phones cannot read all the numbers in that 3G card.