Yamaha's educational materials, the CDs and DVDs for Primary 1-4. I've only watched and listened to them a few times, and I personally think they're in good condition, but they have been used by a child. Please refrain from purchasing if you are a nervous person or are concerned about minor details, as these are used items that have been handled by someone else. I am a private seller, so please understand that my inspection is not professional. I will choose the cheapest shipping method. Please contact me if you have any preferences. I would like to avoid any misunderstandings if the product doesn't match your expectations upon arrival, so please feel free to ask any questions beforehand. Returns and refunds are not accepted. Thank you. Please contact me if you live on a remote island. Also, I may not be able to ship immediately. Please refer to my profile for details. Thank you for your understanding.