But still, they are cheaper than a mining rig composed of graphics cards.
The first batch for $800 was cheaper. At the current price it's close enough to a GPU rig that it doesn't seem to be worth it.
First deliveries should start July 16.
Yeah, first batch was cheap and at the moment mining with it was dramatically profitable compared to gpu mining.
Even if it is a very little bit profitable than gpu, my vote for gpu mining in anyway. I have bad history with asics, they damage easily. GPU's work very well and are easy to sell after use in mining. Also for example if you buy GTX 1080ti, you have possible chance of great roi. For example this winter it could return invested money in two month if you would mine on nicehash or on other coins.