I think most of the folks on this board are in the US, so it may be difficult to get idea of how that Boxster compares in your market. There might be a few people here from Ireland that can hopefully help.
That particular vehicle IS a good looking one.
Here are some other links to help you along the way:
http://www.iwantaporsche.net/BoxsterInfo.htm
http://www.iwantaporsche.net/BoxsterBuyersTips.htm