Total for all 13 pieces (not counting free the free software) = $1231.98
Selling price = $1500
Profit after selling on eBay (usually take 5% = $75 of your sale) and i'm guessing $60 to ship UPS ground insured = $133.02
The ONLY things I can find somewhat weak in this system is the graphics card, power supply, optical drive, and the mouse/keyboard combo.
The graphics card can play Crysis I have heard at all high settings and shaders at enthusiast at 1920x1200 resolution maintaining 30FPS. This is a very powerful graphics card for the price and with the aftermarket cooler, it can be overclocked safely. It also has a lifetime warranty guaranteed by XFX so why would you not overclock?
When I or the buyer decide to add another graphics card, hard drive, optical drive etc., another power supply may need to be added for adequate power.
If a blu-ray drive is needed, the buyer can add it. They're not really worth it right now. Just go buy a PS3.
Mouse keyboard combo I chose just for selling reasons. I personally have a nice keyboard/mouse at home.
CPU is absolutely not weak at all. It can be overclocked EASILY to 3.5ghz according to gamers and system maxxers everywhere. I wouldn't do it myself personally though because I don't think I'll need that high of FPS/video rendering speeds.
*edit* linked PSU was changed after I posted this.
I looked at a couple professional reviews. Kingwins Mach series seems to be alot better than their prior PSUs. Though it still couldnt meet its 80+ certification in real world conditions at 125V (US power), it only made it at 240V (EU power). To have 100 0 Watts and only designed for 2 graphics cards makes it comparable to a Corsair 750HX or Antec TruePower 750 when you look at pricing next time.
That Kingwin PSU is garbage. See the little red voltage switch? Choose one with full range Active PFC and 80+ certification (or better). Antec, Corsair, PC Power & Cooling, Seasonic, and Enermax are all good. Antec Earthwatts are usually at the lower end of the price range.
Check www.frostytech.com for cooler reviews and some "top-10" (they say 5, but list 10) lists of coolers.
Oh, and if you're building this to sell on eBay, don't bother. Your competition is mostly selling near-junk on which every conceivable corner has been cut to lower the price. A lot of buyers won't know that, but they will see the low price. The ones who do know better are more likely to realize they can build their own for less, and likely get better support. I would suggest reviewing your competitors' listings in depth before sinking money into this endeavor.
It's $14 more than the one you have listed, but with the $10 you just saved on the PSU, it should be fine. And also, it's highly recommended by the folks around here who use it. I use a V8, so I have no personal experience with it.