I was told $4000 as well.
What is nice about the Baikals though are that they can do multiple algos.
Miners search for most profitable algos so for most profitable ones its capacity is too limited. Even at $4000 its costly. It shouldn't be over $1000 to $1500 or if they want $7000 they can unleash 30,000 MHs and they would be justified to take such a price.