Animated Bumpers for upcoming series

I need 4 animated bumpers (10 seconds) that feature from 1 to 4 characters in the scene. Animation only (the characters are pre-rigged), no lip sync or dialog. An example is found here: [login to view URL] These are fairly simple animations such as: #1: 2 characters walk up to camera and wave to audience. #2: 4 characters pop up from the ground and knock on the camera, then beckon audience to follow them. #3: 4 characters (a family) squeeze into the screen to say "hi", another character sneaks in from the bottom to be part of the family. #4: 1 Character walks onscreen, looks at audience with distain, then walks off stage. Deliverable file will be a Maya ".MA" file for each of the bumpers. Please include rates as part of initial bid. Winning bid will need to sign an NDA before going further.