I apologize for the confusion. We did put in the description that this is a free 10 minute demo. Although any money donated is greatly appreciated and will go directly back into the development of the game, no one is required to pay. We want everyone to get a chance to try the game for free!
If you'll contact us here: http://skookum-arts.com/contact/ and use the same email you purchased the game with, we will work on reimbursing you.
Thanks!