Whats wrong-right?

So I want to go with a PC music server setup.Mini mac to a Benchmark Dac.I have no problems with a 1300$ Dac price,but when I call the Apple store they want like almost 1200$ for a 160GB hard drive,2.0 GHZ Ram and 3-year service plan for the computer.I thought I could get away for 6-800$ for the computer deal.Is it just me thats feels this is steep in this day and age[2008].Just curious,thanks,Bob