I'd expect closer to $4000 or more.
> is this for the consumer line or server line of products?
Neither or both. Threadripper has high-clocks (like consumer) and high-core counts (like servers). It'd be for "workstations".
It's somewhere between the extreme enthusiast market and the workstation market. It's not _truly_ a workstation product as those will instead typically use Xeon or Epyc for things like full official ECC support & other such features. Threadripper muddies this line a bit as it does actually have official ECC support, but motherboard support is not as reliable as you'll find in Epyc boards.
Intel also has products in this category like the i9-10980XE - which is an 18-core product that's essentially the consumer version of a Xeon chip with ECC removed. Intel calls this their X-series line. And then since Intel removes ECC support, you'll again not really find this in workstations.
It's basically "take the server product, remove (some/most) of the server features, jack the power budget to the fucking roof because you can assume water cooling, and allow overclocking" line of products.
And yeah there is a bit of a gap there. You could always get a low end EPYC but then you miss out on the turbos.