There is a current price guide that lists Harbour Lights. I buy it every year. While it may not be as good as the now defunct Green Book, it does have a fairly accurate price guide. The book is the Price Guide to Contempoary Collectibles and Limited Editions. The current edition is #9. It is published by Krause Publications and sells for $21.99 plus shipping and can be ordered by calling 1-800-258-0929. The prices are provided by Matt Rothman of Lighthouse Trading Company. It is much better then nothing at all.