give me the best price for labtop asus k50ab with original windows vista..

Processor & Cache Memory
AMD Turion™ 64 X2 Dual-Core Mobile Technology Processor ZM84
Operating System
Genuine Windows Vista® Home Premium,
Chipset
AMD RS780
Display
15.6" HD (1366x768) Color-Shine (Glare-type),Vesa Like
Video Graphics & Memory
ATI Mobility™ Radeon® HD 4570, 512MB VRAM
Hard Drive
320GB,