plugs being noisy - do u not mean u can hear your injectors tapping away? thats normal
if ya plugs are noisy ya pistons may be hitting them! LMAO (joke)

could be noisy cams?
hows your oil?

This is a long shot, but, the only way that I can think of plugs making a noise is if they are too loose and are rattling! This will make you lose some compression and you won't get the best ignition..... Unlikely, but the only way I can think of plugs being noisey!

Plugs making a noise? WTF?

If your mixture is wrong there is a problem. Price depends on what the problem is.

Is it running ok?

What are the symptoms?

Just reset your ECU to recalibrate the air/fuel mixture. You do this by disconnecting the battery/ECU fuse for and hour and reconnecting. Then start it up and let it idle, without revving it.

Only thing is, with modern cars, something is wrong if your air/fuel mix is not perfect. Maybe your lambda sensor or one of the temp sensors.

What sound are your plugs making?

Did you get your gasket done?

the spark plugs are making a sound and apparently my air and fuel mixture is incorrect, roughly how much dosh to get the beast set up and how its done?