Each student got all these parts for $11.56: $8.72 + $0.84 tax + $2.00 delivery. Shipping time was 10 to 15 days from the Shenzhen, China. These parts includes two electric motors, a battery case, with all the parts needed. Batteries and bubble soap were not included but available at the dollar store for $2.14. We found some parts left over after finishing the project .