Plenty of books about Yahoo Japan Auctions are published in Japan. Below are some examples...
130 Secret Tricks of Yahoo! Japan Auction
(Originally "string of alchemy" is translated as "trick")
According to the author, although the "Auction Boom", in which everything imaginable has been sold, is already finished, there are many people who are still successfully profiting from Yahoo! Japan Auctions. This book reveals the techniques (and tricks) of successfully selling on Yahoo! Japan Auctions, such as how to stock, how to list etc. Some sly techniques like "tricks with 2 or more Yahoo! Japan IDs" are also mentioned.
This book is published by Bubka (Japan) and is the best-selling book on Yahoo! Japan Auctions. If you are interested, you can click here to have a look at the table of contents.
(This link is in Japanese but you can use a Web translator to translate it into English.)
That's what I'm doing to earn ¥ 100,000 per month using Yahoo! Japan Auctions
This book is written by Watanabe Sakura (29 years-old), a new mother and house-wife, about how she earns ¥ 100,000 per month using Yahoo! Japan Auctions in her spare time.
13 techniques to raise the final price in a Yahoo Japan Auction with a PC are explained - simple enough even for a house-wife or an ordinary company worker. What to sell in Yahoo! Japan Auctions, where to find them, how to list, how to raise final prices 2-3 times, and finally how to be a boss using Yahoo! Auctions of Japan...
If you are interested in this book, you can click here to look at the table of contents.
(This link is in Japanese but you can use a Web translator to translate it into English.)
Earnestly earn! 100 rules of making money in Yahoo! Japan Auction
"You start your business today and earn ¥ 1,000,000,000 a year (around $100,000). It is not a dream!" says Sakura Imoe (33 years old) and Nemoto Ryouta (22 years old), the authors of this book. The Golden Rules of selling in Yahoo! Japan Auctions: how to get good feedback, how to increase repeat buyers, how to find out what the most popular items are, how to increase your profit up to 200%... All are covered in this book!
If you are interested in this book, you can click here to view the table of contents.
(This link is in Japanese but you can use a Web translator to translate it into English.)