Sigh, yes desktops will always be able to have more graphical and processing power, and be able to outmatch most laptops (at least for now.) I will concede to you on that, indeed. I just don't know why you would need to run WoW at anything higher than 60 fps LOL. But hey, whatever strikes your fancy.
Going back to the OP's original concerns though... he should be able to get a very powerful desktop setup with a price point far below his budget. Paying more than $1200 MAX for a desktop is insanity in and of itself.
Custom building is always the best option, and it isn't hard whatsoever. I bet even a monkey could figure out how to insert everything into it's proper slot and screw the mobo into the case haha.