2 things, first the gmo mining contracts start at 500k, and it is contracts, you're not buying the miners. Theyre like the shipping containers for hut 8.
2nd, there has been some promising work with germanium, we may see 7nm chips sooner than we think. I agree q3 seems a bit optimistic, but maybe q1 or q2 2019.
I hope it's coming, we need more energy efficient mining equipment like yesterday.