I did this one for the "Fishbowl Fantasies" coloring book - level: challenging. Fishbowl Fantasies contains line art from myself and other artists. A while back, I had seen the coloring book being sold on amazon and such sites used for up to $100.00. I asked one seller why this price. His response was that it is very rare. Well, it is in fact not rare. The coloring book is produced by ellenmilliongraphics.com, and you can get it hot off the press right from the source for $7.50.