The one signature looked like Eddie Carter. Looking at baseball reference, there was an Eddie Carter that played for St. Petersburg in 1990, his only year in the FSL. Two of his teammates were Tim Redman and Mike Fiore. I think those are your players. Here's the entire roster:
https://www.baseball-reference.com/r...gi?id=b9a07797
Only a few big leaguers on that team, and no stars, but you're right, for a buck, why not. Fiore played for the USA team in the 1988 Olympics and was (I think) a fairly high draft pick, so that's something.