That price will shoot up to $29.99 once the game launches. The Deluxe version of Hong Kong, which adds a digital art book and a copy of the game's soundtrack, is currently available for £15.40/$19.99.
Speaking of which, there's a massive sale of Shadowrun games on Valve's retail platform, so if you're yet to try out the series, now is as good a time as any. There's still lots of polishing to be done, but the game's on course for a Summer 2015 release. It hardly seems like more than a week since Hong Kong's Kickstarter campaign bounded past its $100,000 goal to hoover up a cool $1 million, but Harebrained says the standalone game will be feature complete by the end of the month.