before you decide to buy i would ask some of the local estate agents about current prices in the area and how the downturn has impacted prices.
The value is good but there is a reason for that i know that trying to sell a house in certian pockets of Laytown,Balbriggan and Julianstown can take at least 8/10 months, dont expect to make fortunes either so if it goes wrong you wont be get out easily.
Please note the traffic despite the M1 on weekdays is horrendous , so i hope you like very early mornings and late evenings if going to town. The train station at Laytown is oversubscribed , you will be standing all the way to Dublin but practice your rugby scrum tecniques as you will have problems getting on the train as you have masses coming from Drog/Dundalk.
There are pluses as previously mentioned but you are very far from a decent Garda Station, hospital, firestation, shopping centre,school, college and you transport costs will increase which negates value