There's a few issues with your build, namely the incorrectly priced memory and 760G motherboard.
I'm not sure why you would want to consider prices before rebates, they will have a significant impact on pricing. If you don't want to use rebates at all, that is pretty sensible though.
40-60fps while raiding is a little optimistic, not because it isn't achievable but because you are always going to get slowdown on some scenarios, to the point that an average figure is pretty misleading. Additionally, your fps is tied to what settings you run, your display resolution, and int he case of WoW, addons etc.
This is a version of your build http://pcpartpicker.com/p/2i4rg
It's under budget, but it has a massive $65 of rebates, but it is a lot better value than your original build.
I'll try and knock up a rebate-less version, but it'll be much worse.