b00tang,
The amount you are asking is fair enough. I believe systems like yours sell on eBay for more than what you are asking.
Here's the problem. People on this forum, including myself, are usually looking for real bargains. And due to the nature of this forum, we can occasionally find outstanding deals. Unlike eBay, sellers on this forum are sometimes overly concerned about the "quality of person" who is buying the computer. People selling computers on this forum sometimes care that their beloved computer system is going to be in a genuine mac loving home. So in consequence, computers or equipment can be sold at a very low price. These are the kind of deals that most people here are looking for.
If you want to get top dollar out of your system, sell it on eBay. Otherwise, I have $300 + shipping that I can afford. Way below fair price, but it's all I got.
Good luck,
lw