Maybe it does not seem a reasonable price to you, but for people who don't know, the HiFive Unmatched [1] sells for 679$ [2].
This is the most powerful RISC-V platform you can buy today. It comes as a Mini-ITX board including 16Gb of DDR4 ram, 1Gbps ethernet, usb 3.2, PCI Express and NVMe.
Of course it is less powerful than an x64 machine at the same price point, but it should work reasonably well when paired with an SSD and a graphics card.
On another hand, I don't remember the last time I was interested in a CPU's frequency. In isolation it gives no insights about the performance of a CPU, not even single-threaded performance. Even with the exact specs I wouldn't know how to interpret them, and I doubt many people would.
Nowadays I just check the benchmarks of a CPU to have a rough idea of it's performance.
