Just had a quick look on Athletics NI website in order to register. It directs to newrycitymarathon.com which in turn directs to runireland.com. There it informs that entry is Eur 28.00.
It may be in my haste that I'm missing something but no discount for Athletics NI affiliates and no £stg entry fee for an event that is part of the Pure Running Half Marathon Series in association with Athletics NI??