First, Kids 2 and under are free no matter what.
Second, Kids 9 and under are free - you just have to get tickets in certain sections with a paid adult ticket. Usually, they run about $17 per ticket. So, a family of 4 going to the game would be $34.00. Thats not that bad at all.
The Orioles also do a lot of ticketing strategies / plans to make it affordable IF you do plan on attending 4+ games in a season. Sometimes you just have to do it before the season starts.
What I don't like - is that every year the concessions cost more $$$, the portions get smaller, and the parking fee's increase.
I remember back in 2014/2017 you could go get a pretzel for $5.00. It was decent size and now of course - its like $7.50 and they changed the shape to a small "O".... All of that is getting out of control.