You know, you don't actually need a container for the magnet. Just don't store it with your old 8-tracks and hard drives.
If you want one, just pay the $30 for the nice one. Heck, dude, you're already paying $159 for all the other goodies.
I must admit, part of me was thinking that if I didn't get the speakers, I could use some of that new found $1000 (yeah, that's how my mind works) to buy the magnet container.