Just curious is there any reason you want this particular version of the book? Are 4th editions still considered collectible, they may in fact be I was just curious? My opinion would be to buy a new copy and save the money. I myself feel the need to spend a few dollars on books and have purchased a few first editions but would not be able to buy a first edition of this book as I just googled it and was priced at $7000.00. Jack London is one of the best by the way, so great taste in books.