looking to buy mens softball bat. questions...

So we got a team that plays at pelican park every week. This week our one player with two bats didnt show up so we had to borrow a bat. Anyway, I wanna go buy a bat at academy but all their bats are lumped together. Little league bats with highschool bats, with mens softball bats, with womens bats. How do I tell if im getting a bat thats legal for us to use in our games? Also best bang for my buck? Would like to spend like $150 on a good bat. Is that possible?