Depends on where you are going..airport 40.00euro though this is with a cab firm and not a taxi. We use mini cabs all the time and have had no problems, there are also lot of taxis in the evening around Dunboyne Castle Hotel.
If however you were referring to the latest prices of houses in Dunboyne Castle a 3 bedroomed town house that was 360,000 this time last year is currently 495,000