They have the inspection itself done through a station with the state certification a block or so away. They will do a free pre-purchase inspection, and let you know what the car will likely need to pass. They are VERY honest and their "gimmick" is not costing the customer any more than is necessary...and even then they will cut you some slack.

Steering and tie-rods are one area of inspection focus, as are brakes. Floorboard rust generally raises some concern. Check the Maryland Motor Vehicle Administration website for further details.