這台hp probook 4510s 價性比如何?

剛剛在上學的路上，無意間發現(其實是經常留意有沒有特價)hp probook 4510s進行清貨特價，其規格如下:
Processor: Intel Core2Duo P7350 @ 2.0GHz
Operating System: Microsoft Windows Vista Business
Memory: 4GB DDR2
Hard Drive: 320GB
Optical Drive: DVD MultiDrive
Display: 15.6" LCD WXGA (1366x768)
Video Card: ATI Radeon HD4330, 512mb ddr2
Speakers: Integrated
Wireless: 802.11B/G
Communication: Webcam
Ports: USBx4, HDMI, VGA
開價$500CAD，折合約台幣$15500。
但說明是清貨，只附帶Vista Business，而且是DDR2。
各位覺得價性比如何?