The price I got through Book2park at the EconoPark Express lot at BWI was exceptional. The process was easy to use, from reserving to paying. All instructions were clear and easy to follow. The lot at Econopark was secure and their shuttle service was awesome. Our flight was over 2 hours late returning, and their shuttle was on the ball even at 3 AM. I waited less than 10 minutes for pickup. I didn't even have to call and they were there. Didn't even have to pay extra for being late because the lot charges by day not hour.