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The olimex company just announced the: RVPC - a kit PC with a RISC-V CPU, and they say it'll cost US$1
(olimex.wordpress.com)
This is a most excellent place for technology news and articles.
If you're curious enough to get one, I've seen them on ebay as well. Might even be available on Amazon. I think they've been around for a couple years, I just got mine in April but still haven't had time to fire it up and play with it.