Thinking about buying a laptop, how much do you guys think it's worth?

It’s an hp model# ze4430us

http://h10025.www1.hp.com/ewfrf/wc/genericDocument?cc=us&docname=c00249294&lc=en&jumpid=reg_R1002_USEN

Theres a link to the model…
please let me know what you guys think it’s worth before I buy it

I would pay $400-500, no more than $600 at the “gotta have it right now” price.

The processor is gonna be very sluggish with multi-tasking and bleeding edge programs.