I just missed the 60% sale for 11.99. I hear GOG has a lot of sales. I'm a bit new and haven't been on GOG in long time and don't know much about it. I really wanted to try this game.
Not sure when this particular game will go on sale, but GOG typically has a massive fall sale involving a huge portion of the game catalog followed by a big winter sale. Fall sale might be a few weeks away though.