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.
I share your opinion on GPU matter, however there is one thing that interest me. How did you come to conclusion that roi for 1080ti would be two month? I don't know where you live, and maybe price of 1080ti in your country is lower than in mine, but here I would need around two years for roi. NH shows average profitability of 1080ti with $0.05 KW/h to be around $48, so two months for roi is insane conclusion. Or maybe you thought two years?
Where are you getting a two-year break even period for a 1080Ti? The cards now commonly go for around $700 (they're even in the Nvidia store for that price right this moment), and with that price I figure you break even in 14 months, which isn't close to two years. I know they only ship to Canada, the US and its territories, but prices shouldn't be a lot higher than that right now for the card.
Prices are supposedly going to drop further sometime next month or so, so at the very least you might get down to the $700 that most people are paying right now or lower.