You should compare this to the price AVALON is currently selling it's four module miner 5.5 BTC for 110 GH/s at 750 W (twice as expensive for less hashrate and around 4 times the power consumption)
No you shouldnt. I guess this is one of the great miner fallacies, comparing mining hardware to each other rather than judging it by itself on its profitability. Its not because miner A is an even worse deal than miner B, that the latter is a good deal.
disclaimer: Ive not done the math, so Im not saying these modules are not a good deal, just that it being better than other worthless deals doesnt make it a good one.