Cost for 03 Jetta spark plug replacement

hey guys, a friend of mine needs to know how much a spark plug replacement would cost (on average with parts and labor). i think the spark plug is around 5 bucks but i dont know how much labor will cost. she lives in the chicagoland area. any estimates would be awesome thanks!

Plugs are $6 a piece times four. $24. Labor is 1 hour. $85. About $130, thats includes tax. Hope this helps.
Franco