Back when I was a kid, I opened a pack of these from one of those repack boxes. Inside was a Grand Slam insert of Jeff Bagwell. I remember looking at the package, and the odds of pulling one were really high if I remember. I kept that card for a while in my "nice cards" simply because of the odds, even though it had the Denny's logo on it. I don't have that card any more, but this at least brought back some memories.
I don't even think this card is one of those Grand Slam versions.
Edit: Just looked at the packaging here, the odds weren't as high as I remembered. Or at least the odds seemed higher to me as a kid.