My car was misfiring and going on three cylinders apparantly. got it fixed today. I was charged �98 for it. i reckon it was an excessive amount for replacement spark plugs and a lead.
It depends on the type of car and the number of spark plugs. e.g a four cylinder twin spark Alfa has eight spark plugs and on some cars they arnt so easy to access. It always pays to shop around and get a few prices first.
Thats �84 plus VAT. Take off say 3/4 hours labour if he was Mr Speedy- �37.50 you are left with �46.50 for the sparks and a lead. I think it's about right - I think it's called The Joys Of Motoring !!