Consumer hardware is cheap, if 192 GB of RAM is enough for you. But if you want to go beyond that, the Mac Studio is very competitively priced. A minimal Threadripper workstation with 256 GB is ~$7400 from Puget Systems. If you increase the memory to 512 GB, the price goes up to ~$10900. Mostly because 128 GB modules are about as expensive as what Apple charges for RAM. A Threadripper Pro workstation can use cheaper 8x64 GB for the same capacity, but because the base system is more expensive, you'll end up paying ~$11600.