how much i should pay for a second hand Sony VAIO VGN SZ433N?

1) 1 and a half year old
2) T5600 (1.83GHz)
3) 1GB DDR2 SDRAM
4) 100GB hardisk
5) NVIDIA GeForce 7400 notebook GPU
6) Vista Business

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Added on March 3, 2009, 2:41 amhelp me pls.....
gv me any advice...
thx...

This post has been edited by shin_nosuke: Mar 3 2009, 02:41 AM