Irish Life on Lower Abbey Street is €5 overnight I believe, but if you need to move the car it closes at midnight. From memory the College of Surgeons at Stephens Green was always quite reasonable overnight too but I haven't parked there in years so can't say what they charge now.
Irish Life are very expensive to park in during the day. Jervis centre is much cheaper.
Whats the latest...who is the cheapest?
ST. STEPHENS GREEN = €12 for 24hrs. Can this be beat?