This is a set of Kali instructional DVDs. I bought these for reference in martial arts. They were made by Japanese people, so they're easier to understand than those made overseas (even if you understand English, foreign-made ones are still... it's better to have these explained in your native language). The retail price for all four would be around 9000 yen. They were originally shipped in paper cases, and each had some slight scratches from the beginning. However, due to my carelessness, discs 1 and 2 have a few more scratches (especially 2). I've included images of the back of each disc, so please take a look. I've confirmed that they play normally in my environment before listing them, but please only purchase if you understand that you might not be able to return them (in other words, please consider them as 3N junk items). To be honest, rental DVDs often have much worse scratches and still play fine, so I think they'll be okay... Here are the links to the product descriptions on the shop's website: http://www.bushidoshop.jp/smartphone/detail.html?id=000000000762&category_code=ct14&sort=order&page=1 http://www.bushidoshop.jp/smartphone/detail.html?id=000000000782&category_code=ct14&sort=order&page=1 http://www.bushidoshop.jp/smartphone/detail.html?id=000000000844&category_code=ct14&sort=order&page=1 http://www.bushidoshop.jp/smartphone/detail.html?id=000000000910&category_code=ct14&sort=order&page=1