To be fair...it wasn't the Maryland State Police who were keeping folks from getting carry permits; it was our Governors and the members of our General Assembly who refused to drop the "good and substantial reason" language from the permit process.
The recent SCOTUS decision has resulted in a deluge of applications for carry permits here. There is a training requirement, which includes both classroom and range time, as well as fingerprinting and a background check, and the total cost can be as much as $400 or more.