I used the gaming machine as a quick way of getting the high tech end of the pricing spectrum. At the time the "$5000" statement was made, all computers were high tech and high end.Wow, these figures are amazing. However, I've never bought a gaming machine. As far as "the average Joe" machine, we sell a basic business setup with 23" flat screen monitor for about $1,000. It has 8GB memory and 300GB harddrive. And that's with our markup over the distributor.
I'm not sure where the high prices come from but I assume that the processor is bleeding edge and therefore pricy. Of course the memory has to be the best and fastest to match. The graphics card adds some but I don't think a huge amount.
Maybe it's the water cooling, overclocking and the lighted fan.