384Mhash for ~$2100.
10 months to break even at 6000 difficulty $.10 power
25+ to break even at 12k diff and $.10 power.
(according to Coin Warz calculator)

I'm sure your numbers are right. But I think you are assuming there will be no virtuous cycle provided by a more secure blockchain. A Chinese company committed time and people and money to design, tapeout, manufacture, characterize, and bring into production an IC that is dedicated to mining X11 secured blockchains. This is capital intensive work. This is not rolleyes. This is a vote of confidence in the future of DASH.
This a less efficient 152nm chip design than the typical 32nm, 25nm and now 16nm designs with bitcoin miners. But this does open the door to improve efficiency later which the manufacture indicated. The efficiency numbers still look pretty far out for payback, but this one machine can replace 10s of GPUs rigs.
This is a good time to be in Dash.I disagree..scrypt altcoins plummet when ASICs are introduced..cheaper electricity makes cheaper coins

add to that the POS masternodes that produces coins just by holding them..
Sell your DASH now, buy back in cents.