The 1st-Gen AMD Ryzen Threadripper 1900X CPU is currently priced at US$299.99 on Newegg. This Zen-based high-end desktop processor (HEDT) was originally released in August 2017 and cost US$549 at the time of launch. The chip has eight cores and 16 threads, and it can offer a boost clock of up to 4 GHz.
https://www.notebookcheck.net/Pick-up-an-AMD-Ryzen-Threadripper-1900X-processor-for-US-299-99.414911.0.html