Hi there, I hope this message sifts through all the spam and finds you well. I've read your proposal and I believe I understand your needs. I am a motion graphics designer and I mostly do intro's, outro's, and infographics but I prefer whiteboard.
I do this kind of animations in two ways. Both involve creating custom made illustrations. The first way involves creating illustrations inside Illustrator, exporting to After Effects and animating there. I do this when there's other kind of motion graphics involved. This method take more patience and expertise so I charge more for it. The second way is creating illustrations in Illustrator and exporting to Videoscribe for animation. This is less complicated, hence cheaper. And yes, there is a third way but it doesn't involve custom made illustrations. Videoscribe software has a big database of illustrations so I can work with that. As I said, it's not custom made. So, there are 3 options to choose. I pointed out my fixed price here, but it's irrelevant. Depending on the option, duration, etc... the price can vary.
Please check my portfolio for some references on my work. Don’t hesitate to contact me if you have any questions regarding pricing, turnaround time,... Anyway, I'd love to hear from you. Have a nice day.
Vlado