Hopefully, Federal is donating a really nice chunk to a good cause. For me, however, I can get other brands for less IF I need factory. With a new case of wads, sleeve of primers and jug of powder though, it might be a while.....
I'm old school enough to call that a flat of shot shells -- a case has 500 shells and is twice as tall. A weekend's ATA tournament would typically burn up a case of 12s. Flats are a lot easier on your back than the heavy old cases.