There are quite a few places you can buy new or pre-loved kayak these days. These are links to some of those vendors/stores:
The Buy and Sell section of this site.
www.adverts.ie - Local Irish Buy and Sell forum, mostly second hand kayaks and sometimes new.
O'Kayak.ie - Local Irish retailer for WIG Kayaks, Sector kayaks, Seagla paddles and other equipment.
adventurekit.ie - Local Irish retailer for Rebel and Aquarius kayaks and various paddle equipment.
Paddle and Pitch - Local Irish retailer for NDK kayaks, Whetman Equipment, Reed Chillcheater, Gram and many others.
CanoeCentre - Local Irish retailer for kayaks and paddling gear.
I-Canoe - Local Irish retailer for kayaks and paddling gear.
CH Marine - Ireland’s leading Marine Equipment Supplier and Safety Services Centre.
WetSuitOutlet - Europe's largest supplier of watersports clothing and equipment (UK and EU based).