If you caught our video form Jan 11 (https://www.youtube.com/watch?v=GC55-G2h8kk) you'll know that we were aware of a problem with the early access pricing and we were working on getting it fixed.
Bottom line: we fixed it. :)
The price today is set at $9.99 which is about where we want it for this phase in Early Access. The general plan going forward is for the price to slowly creep up during development as we add new content, new features, and generally make the game more complete and polished. When it's done, we anticipate to be $14.99. Of course things could change, but that's the basic plan right now.
For now - we're happy to have this mix-up sorted and, in full disclosure, it was totally our fault. We misread some of Steam's documentation and just set the whole thing up improperly - mea culpa.
That's it for this announcement - we'll keep it brief - and look forward to a content update in the near future. :)