You can over-clock 3 Z9 minis to 50kh/s. So compared to 3x Z9 s batch 1 at $6000, this one at $10000 is heavily overpriced.
At 1500+ watts, massive increase in db/heat, and a reduced lifespan, yes. The A9 is 650w + 3 week head start for the first, day 1 orders. This is coming from someone who has 4 z9 minis on the way. Also, it's very doubtful, but no one knows if they have contain enough memory for the upcoming 144 equihash parameter tweaks.