This is one of about 120 pages I did for a book recently... it was a low budget, crank-it-out project - but most of the pages came out very nice - this is one of my favorites. 

The average time-frame for these pages was: 15-20 minutes for the pencil, 30 minutes for black line, 90 minutes +/- for the color... which I had someone helping me with. 

In fact, I have modified the color on this page extensively, after the fact, using my computer - without any alteration of the line-art at all...!

( I scanned-in the printed page from the book, then - using a special application technique in Picture Publisher - re-colored the color the way I would have done it - if I had done it. )