This is a set of two books. The condition is generally good, with no major damage, and I think they are in relatively clean condition. "Kaigan! JavaScript: Gengo Shiyou kara Manabu JavaScript no Honshitsu" (Opening Eyes! JavaScript: Learning the Essence of JavaScript from the Language Specification) Yuichiro Wada / Cody Lindley Price: ¥2200 "JavaScript: The Good Parts: Best Practices with "Good Parts"" Douglas Crockford / Takaaki Mizuno Price: ¥1800