No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $418 — a different platform, not this one.

Sir Questionnaire

Sir Questionnaire is a turn-based hack’n’slash game, where you enter a dungeon and each room gives you two options: leave the room, or interact with whatever is in the room. This can be monsters, gates, treasure chests, pools of water, but also debris, or just another door!    A game designed around the simple premise of adventuring: go west or go east? Every room you enter will give you a choice, either stay and fight the dragon, or turn your back and rush to the next room. If you have the right gear, you might be able to slay the dragon.. if you rush away, you might feel its warm fiery breath hitting you in the back.  No twitchy reflexes are needed, this game can be played at your own pace. Make the right choice, use your inventory to gain the upper hand in any room, and move deeper into the dungeon!    Take pictures of your various encounters and complete your codex with information on the various entities that roam the dungeon, learning more about the weaknesses and strengths of creatures and magical entities.  Take on Quests as you enter every game, ranging from easy to hard, with each quest type rewarding you for your next game. The harder the quest, the bigger the reward, so again: choose wisely!