When Captain Disaster in: Death Has A Million Stomping Boots goes on sale from 1st to 9th December 2018, the size of the discount will depend on certain targets being reached. The discount currently stands at 16%, which will mean the game will cost $7.55.
If you feel that's too much, never fear! There's still plenty of time to reach some of the targets. For instance, just 2 more downloads of the game's demo will knock another 2% off the price.
See this post for full details.