Key cutting place outside Pyramids in Grange Road do a reasonably cheap price if they do your particular key that is. 0151 647 7464
Cheers Salmon but staying well clear of him through experience, got a key made about 4 years ago (No chip) for £17, tried it in the car and it snapped straight away, luckily managed to get the snapped piece out and took it back to him.
He was an absolute nightmare and was blaming me for being heavy handed with the key (Which i wasn't!)
Anyway long story short, he was having none of it and i nearly got physical with him coz he wound me up that much, so in the end he said he would do me another for half the price (£8.50) so rather than be locked up or go away with nothing i had to accept. The key lasted 6 months then snapped. Never again!