Maybe not, that was an exceptionally efficient build that I'm proud of, but it still stands that you need to be very efficient if you want to profit, and < 1Mhash/$ is very inefficient. Even at stable difficulty and $20 coin prices, it wouldn't pay itself off for almost 1.5 months. A bad goal to shoot for.

My point isn't to build my build, I was lucky, it was just that you need to be as efficient as possible, and have numbers to approach, if not asymptotically.

You can still build somewhat efficiently, for example a 4x 6870 rig pulling 1.2GHash/sec can be built for maybe $900 if you build smartly. Already up to 1.333mhash/$. There may be other builds that are more efficient, I'm currently amp capped though so I haven't been looking to build more lately