1859? my rig cost 1700$ retail to build back when the x1800xt was brand new and selling for 600$ you wont' get anywhere near 2000$ off of ebay with anything short of an x1900xtx and an x2 4800 rig. single core sandy and an old school x850xt aint gonna make 1200 much less 2300. lol believe me I know I'm a retailer who tried selling on ebay for some publicity, but no one wanted to pay near what the rig was worth.
drop the case it's to expensive and get a cheaper 100$ or less case, with a bigwater 745.
then swap the sandy for a 3800x2 and the x850xt for an x1800gto or xl. get rid of the 20Gb and the 120GB and run just the raptor. don't put in the sound blaster.
and sell it on amazon instead of ebay, you should get at least 1600$ for that rig.
3800x2
x1800gto/xl
dfi crossfire mobo
500 watt psu
plextor dvd
xp pro
2GB mem
decent case
bigwater 745.
these are hot items right now as the average enthusiest gamer believes dual cores are the king (whether ot not it's true), the x1800gto or xl will stand out as a performance beast to them as well (again whether or not it's true) case is all about looks, rather than functionality, 2Gb mem is good as the enthusiast gamer thinks that's the best as well (again whether or not it's true) bigwater will also be an enthusiast draw, dfi as well.
you need to make sure the cost of the rig is much lower than 1800$ (more like 1200) for you to build, and lower than 2000$ for them to buy (more like 1500-1600)
I really wish you would have put what you were planning up on the forum first before putting it on ebay, as I assure you no one on ebay will buy that rig and you like me will have to swallow the cost of selling (up to 55$ ). lol