Bitcoin Miner Profit using 600 GH/s Monarch from Butterflylabs
The part you are missing is that it is a preorder and the current estimate is that if you ordered now, you would likely not receive your mining hardware until April 2014.

This site shows a good calculator and I have configured it to show the (lack of) profits you would make if you started mining with this miner starting in April:

http://mining.thegenesisblock.com/a/7141b8c779