Create whiteboard educational videos -- 2

Need to create 2-3 minute educational videos for explaining maths concepts to kids. Videos need to be created on a whiteboard and using MySimpleShow or Videoscribe (or something else). There will be more than 30 such videos. Please quote with a price per 2-3 minute video and your sample work. We would also need the source files of the work. We will provide the script and voice over. Please note that ours is a bootstrapped startup with a very shoestring budget. The storyboard and voiceover will be provided. Here is a sample - [login to view URL]