Some years ago I designed a set of cards as an aid to the wenwanggua 文王卦 method of Yijing usage. I never found an affordable way to publish them, but last week I found a manufacturer who is able to print the cards in the size I want and in small quantities - say 20 decks. The limited quantity makes one deck quite expensive, but at least I am able to produce the cards without a huge investment and I am not getting stuck with a ridiculous amount of decks which I will never be able to sell (regular card manufacturers usually have a minimum of about 1000 decks).
Without an explanation the cards would be difficult to use, especially for novices. I am now in the process of writing the book which comes with the cards. It will explain the intricacies of the wenwanggua system, it's elements and subsystems, with examples from traditional sources. The cards will be used as a guide through the wenwanggua system, every element of a card has its own chapter in which the background and usage of that element is explained. The book will also have chapters that will suggest ways to use wenwanggua for other uses than fortune-telling. The book will follow a step-by-step approach, but with every chapter you will be able to use the given information immediately in daily practice.
If you want to see all the cards you can take a look here. I expect to sell the cards with the book for about $ 50,-- (excl. shipping; the book will also be available as a pdf download to save on shipping and printing costs). If you would like to be informed about the progress and receive a mail when the cards are available you can send a mail to firstname.lastname@example.org.