The Ryzen lineup includes the 65W R7 1700, 95W 1700X, and 95W 1800X, which are priced at US$330, US$400, and US$500 respectively.
http://www.notebookcheck.net/AMD-Ryzen-lineup-officially-released-with-full-specs-and-pricing.198322.0.html
Funny: according to slightly multicore outperforming it seems that AMD CPUs would be almost twice slower than Intels' in single core benchmarks.
In multi-core applications your threads work independently for some time (for the sake of example) then they finish their job and you need to synchronize the result of their work, which is a single-threaded task.
i.e. if you have 4 cores and I only 2, but doesn't mean you will be twice as fast as I am, even if the application is perfectly programmed to use more cores.