According to this article the 29xx cpus will become available on October 29, 2018: AMD's 12- and 24-core Threadripper 2 CPUs arrive October 29th
The assumed price for the 2920X is $649.00 and for the 2970WX will be around $1299.00.
You will need to wait to see if any Retailers will have any type of Sales for these CPU when they become available or if AMD will have a Promotional Sale price at the beginning to entice Users to purchase the new CPUs.
Either way, they are much more less expensive than Intel Gen 9 CPU that are coming out with similar traits.
i saw it.