We initially wanted to set the Early Access price to a discounted $9.99 for the duration of the Early Access. However the sale price only lasted a week (which we didn't realize when we set it) so we've been informed by Steam that the way around this is to set the price to $9.99 and then reset the price back to $14.99 once we get to launch - so this is what we've done.
If you were one of the people who paid $14.99 for the game last week then we'd like to apologize and offer you a free code for an extra copy of the game.
Thanks and we hope you're enjoying the game.