Claudio, abebooks.com has used copies of the McGrew book, Softcover, 2nd Edition, for US$65 or less. One in Delaware, the other in Texas. The one in Delaware is the 2009 reprint of the 1993 edition. I am familiar with the store in Texas, which is a huge used bookstore, so the book may have gotten some shelfware from their customers. The Delaware copy is from Oak Knoll Books, the company that printed the book originally. Shipping cost via mail might be about US$20, but I'm just guessing.