How much does this cost to the nearest dollar?

Sonnet Ch R
Eight 10Gbps USB-C Ports on a Single Card Adds eight USB-C 10Gbps ports to your Mac Pro, Windows, or Linux computer; or Thunderbolt to PCIe card expansion system. Supports Eight USB-C Cables Ports are spaced to enable connection of eight cables (and even USB-C male to USB-A female adapters). Four Independent USB Controllers, Full 10Gbps Bandwidth Per Port PCIe 3.0 bridge chip and four USB 3.2 controllers enable each port to support data transfers at up to 1000 MB/s, even while transferring files from multiple drives concurrently. Powered Ports and Protected Power Delivery Supports USB-C bus-powered SSD, SSD RAID, and hard drive devices with up to 7.5W power per port. Mac

Price is $400.00

Price: $399.99