[MrForbes]

1. We spend somewhere around $2000 on the robot.

2. We get a lot of our money from sponsors. Thank you sponsors!

3. Arizona has a neat tax credit program that lets anyone donate a few hundred dollars to a school each year, and it is credited to their state tax bill, so it really doesn't cost the person anything. This is how we get much of our money. Thank you Arizona taxpayers!

4. We mostly don't receive services from sponsors.