So, I like the idea of getting something you wouldn't normally by, but wagyu beef? You'd have to kick in some of your own money to make it a meal. You might get one decent size steak for that. Maybe I'm missing something but that seems like trying to get more out of the deal than deal was worth - $100.
I like the get the most out of your money idea the best. Wait for a sale and load up on your favorite cuts of meat for BBQ'ing. Some butts, ribs, brisket and you have enough for a big dinner with your family and friends or enough for a few cooks for just the family.