I’ve had this book for about a year, and while it’s definitely been used, it’s still in really good condition. The cover has some light scuffs from being carried around, and a few pages have small creases or minor signs of wear, but nothing that affects reading or understanding the material. The spine is still sturdy, and all chapters are fully intact. It’s been a reliable companion through coursework, and it’s perfect for anyone who wants a solid, affordable copy to study stochastic processes in finance without needing a brand-new book.