"Effort Can Be Systematized: Behavioral Economics of Effort That Allows Both Yourself and Others to Effortlessly Continue 'What Needs to Be Done'" Price: 1,700 yen + tax I purchased this and have read it once. There is a slight crease on the cover (see photo), but the inside is in good condition. Also, it has a scent, like incense, from when I purchased it. I don't think it's an unpleasant smell, but please be aware of this if you are sensitive to smells.