Wow
Spark plugs here in the U.S. cost about $7.00 each for Autolite's, with the NGK's about $14.00 each, and wires should run about $25.00 for a decent set at a local Auto parts store, but then I'm not paying a dealer to install them either.
Around my area the usual dealer shop rate is about $85.00 per hour.
Are you not mechanically inclined to do your own work?