Everything in this computer with the exception of the motherboard was purchased on craigslist or something I had lying around. I sort of just built this for the hell of it, but I decided I will try to sell it on craigslist for roughly a $100 profit. I think It would be fairly easy considering the parts and the price I paid.
The CPU was purchased with the 8GB memory for $150 on craigslist. I was surprised to see how cool it runs with the stock cooler.
The motherboard was purchased at Altex. I paid roughly $15 more than it is worth simply because it was the last part I got and it was the only one I could get without getting it shipped.
The SSD is my favorite part. I traded a case that I spent roughly $20 on for this SSD and a 1TB 3.5" Seagate HDD that I'll be using in another build. The SSD is only 3Gb/s but it actually boots faster than my main i7-4770k system with a Samsung 840 EVO SSD.
The 2.5" HDD I got from my sister's laptop when I upgraded it to an SSD.
I effectively paid $105 for the 750 Ti. I spent $125 on a sapphire 7850 and traded that for the 750 Ti plus $20. It was a great deal.
The case I got as part of a $100 deal that included this case, an AMD A8-3800K, 6GB (2GB x 3) DDR3-1600 Corsair XMS, and a 650W Seasonic PSU.
Altogether I think I did a pretty good job and should have a fairly easy time selling it for $500-$600 on craigslist.