This is a tiny wee locksmiths in Bangor that will cut your keys while you wait. Infact they once repaired my school shoes for free while I waited and threw in a keyring gratis. I stood in one shoe chatting and I was out if the shop before I knew It. I do not know exactly how much it is per key but I know that I was able to afford one key with loose change in my pocket. So it must be cheap as I do not generally have much money.