I bought the xeon from Ebay at a discount about three years ago, when it was still fairly new. It was some sort of engineering sample and I paid about $3K for it while the list price was at least a multiple higher. We used it for CPU rendering for several years and I've only recently repurposed it for a development workstation, as we moved to software that can utilize GPU rendering. These days I almost certainly buy an AMD Threadripper or Epyc for a development workstation.
You can go to Dell, HP, or Lenovo to get a premade Xeon workstation. Getting Epyc premade requires rather more research to find and qualify a vendor, and that vendor may not make it easy to configure and but from the web site with or having to enter a relationship with a sales rep.