I think what he meant was that he did not spend money on this project in particular. They used the reasources already available to them. He clearly already had all the software, and probably most of the hardware, and could borrow what he didn't have from friends.

I recently participated in a video project which also was done mostly with the stuff that was already available to the participants and participants' friends. As a person who was doing art direction for it, I had to buy some props and materials, but it was peanuts comared to what the project would've cost if we had to buy all of the stuff we used.

Edit: Oh, amazing short! Thank you for posting it here! (I thought I already said it, so didn't add it in the original response)