We wanted our rocket to be safe, but also inexpensive. We only spent $1.5 million, which is lower than we expected. We expected the rocket to cost more like $5 million. If we had spent more money, our rocket might have been more successful. We should have bought more super glue so that we could use less duct tape, but instead we put a lot of duct tape on our rocket. One part of our expenditures that we could have saved money on by not buying was the 3-D printed items and the expenses that come with it, because it didn't contribute much to our rocket, it just weighed it down. Overall, we think that we spent our money well, and we think that we were very cost effective.