In the end it's a pretty cool toy for < $30.
Here's the link to the product on BangGood's site.
Here's the video I made of how to build it.
I also made this quick dumb little guide for properly spacing the planes before soldering in the wires to fix them in place:
Here's a link to the STL if you want to print one. Or you can just hacksaw slots in a hunk of wood or plastic or something every 20mm, whichever.