It looks like I'm going to have to order some parts off various websites. While the webpage says the parts are available at Home Depot, the instructions provide links to online stores where you can actually purchase the motor and fan necessary to build the thing.

The motor I was looking at getting is $250 alone. I don't think I'm ready yet to make that kind of commitment on something that might not even work, so I'll stick with the $70 they recommend in the instructions.

Hopefully I can get the parts ordered up soon, though. I'll keep you posted.

And if anyone's interested in the plans, I've got the Word file that I paid $15. PM me and I can email it to you free of charge.