What have you spent in time and money so far to get one miner working to the specifications that BFL promised originally in 2013? We obviously can see that the size of the unit and configuration is not data center ready by any means compared to plug play units from the competition that do not require intensive care to run or water cooling.
I'll hijack this question right here and answer it myself.
So I got 1.4 TH/s with the two Monarchs right now. They cost 590 euros combined including postage. I already had PSUs for them. In comparison I could get a second hand Spondoolies SP10 1.4TH for a thousand euros right now in Finland. I already had four Antminer S3s but sold three of them for roughly a thousand euros.
Yes, I'm sure the Spoony SP10 is data center ready and more reliable. But I've heard it sounds like a jet engine. The Monarchs pack way way more power per unit compared to an Antminer S3. They are more quiet than an Antminer S3. The water cooling is a GOOD thing if it doesn't break or leak and you don't have to pay extra for it. Many PC enthusiasts would love to have water cooling for their cpus and gpus.
So for a hobbyist and a home miner a Monarch can be just fine if you can get it for a right price and it doesn't break down. For a datacenter the Molly is surely quite unreliable and wonky crap. And yes, btc mining profitability sucks for everybody right now so you really would need to get the miners for free to make any decent profit.