How much is my alienware aurora worth?


May 11, 2015
Hello, i received an alienware aurora for free. I'm not much of PC gaming person, although i do enjoy playing games on consoles. I'm planning on selling my pc since i won't be using it, i just want to know how much it's worth. I'm not PC gaming savvy.

Also if someone could also tell me if this is an aurora r2 or r3.
Here are the specs.

Windows 7 home premium
Ati radeon 5700
600gb hard drive
intel core i7 920 @ 2.67 ghz
9 gb ram.

Pictures of pc below.