The price on these are in BTC, so min order quantity is 2, which comes to $1000 for less then 1TH. These will never break even, especially since you have to buy a $200 power supply too. These "should" be priced at $400 each, but that's just my opinion.
You should be able to get PSU's for much cheaper than that. I'm paying about £85($145) for 2 x 500W PSU's at a time. I think as long as people sell there kit on after at least a month and restock at the lower price then resell and so on, a steady amount of income is possible.