Dell Studio s1737-020B Appraisal?

In great condition and I am planning on selling it. I would like to ask what you would recommend me put the price for it. Thank you.

Here is the specs:
http://www.usedprice.com/items/computer/dell/laptop/studio-s1737020b-516325.html?pn=15&ob=n
Update: By the way it has a 9-cell battery.
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