It's used... Computers depreciate faster then just about anything else I know...It's nice stuff, but it's used nice stuff.Probably not what you want to hear, but I'd take the first offer over $500 and run. $400 if you're going to keep the monitor.Sorry.
People on craig's list would pay $900 or maybe more for it, they be dumb.
That answer doesn't hurt at all, it's pretty much expected. It's not a sure thing that I'll get rid of it, and I'm sure the longer I wait the more the value depreciates. Thanks all for the responses thus far!