How much can I sell my HP Pavilion dv6 laptop for?

[kristenkvs]

Model: HP Pavilion dv6 Notebook PC
Processor: AMD Phenom(tm) II P940 Quad-Core Processor 1.70 GHz
RAM: 8.00 GB
System Type: 64-bit operating system

Has Windows 7. Back lit key board, Fingerprint reader, Webcam, etc.

 

[Alabalcho]

How much does this laptop cost now? Does it has any warranty left?
If I am a buyer, I would consider these two factors, then take 30-40% off the price of similar-spec new laptop.