Hello,
I work with Wacom graphic tablet, Inkling and adobe Illustratoror or photoshop, also many classic techniques (charcoal, watercolor, ink, pen,.. ). You can check some of My work in my freelancer.com portfolio. (if you dont find there anything is style you like, please message me. I'm sure I can find something on my PC, if not I can make you a free sample)
Price (20-100+$/ illustration) depends on style, technique, size and complexity,
100%custom designs (i don't use free elements, mockups, google or stock images),
also, do you need illustrations on paper? or hi quality scans will work for you ?
Please tell me more about your story, also what style and technique you would like to get?
If this book is for children I would suggest watercolor, Its getting back in fashion (since everyone can use photoshop, but not everyone knows how to draw/paint), If you want to keep this b&w pencil will be perfect. Please message me I will send you few samples i don't have in my portfolio here on freelancer.com
If You have any questions or want to hire me, msg me with details,
Regards,
malajka