Below is the retail price of the variou brand of AMD Radeon HD 7970 graphics card. You can get them from Sim Lim Square.
Asus 7970 3GB – $928
MSI 7970 3GB – $928
PowerColor 7970 3GB – $888
Sapphire 7970 3GB – $888
XFX 7970 Black Edition 3GB – $938