The color checker is an ingenious design... what a great tool! To achieve realism its all about correct proportions, correct values, and colors. I watched the video on how to make the color checker... as easy as it is to make, i'm just not that handy... I hope Mark in the future would sell this product in his product line. I'm not sure how much it costs to make, but I think its worth between 25 to 35 dollars.