You should take this to the business and marketing forum. They can help you consider all your costs, computer, overhead…
You might not want to bill it hourly, but you need to figure out how many hours you are going to invest in this, designing the characters, animation, revisions, narration, editing the narration. Just my opinion, but 600-800 seems way low(that’s about 900-1200 US$). If someone designed the characters for me(in layers preferably), 16 hours would be a pretty low estimate to get something like that pulled off, but I think that’s more of 24-30 hour project for 1:30 in animation.
Johnny Cuevas, Editor
Thinkck.com
“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.