Horrible ROI for a miner thats months away from release.
180 mh/s is barely 170$ a month. By the time they release it if prices dont go up that miner will be worthless. But yeah GPU mining is dead thats the cost of 2 rx 580
The thing is everyone is comparing it to the current (highly inflated) price of GPUs. If it wasn't for the run-up in GPU prices because something like this wasn't available last year those RX580's would probably be going for $150 each by now, so this would actually be more like the cost of 5 of them.
Sure you have the mobo and other stuff to add to the price, but then again that GPU based rig is more flexible in that it can mine other alogs, including new ones that may come out. Also, as others have pointed out, the GPU rig can be parted out and resold if need be, whereas the ASIC is just a paperweight.
So long-term I think this is actually great news, as it isn't quite the GPU killer everyone had feared. It beats out GPU rigs on price alone, but as I stated only because GPU prices are so over inflated right now. Once the E3 hits the market GPU prices will come back down to normal and probably become bargains. At that point I expect you can put together a 6x RX580 rig for closer to $1,100 by then, so it will be a even match considering the GPU rig will have other uses and resale value so worth the extra $300.
As soon as Bitmain releases the next "E4" iteration that's more energy efficient, no one will want these. 
