I haven't looked lately, but I've been told it's about $90 a time unit. You're supposed to think the time unit is an hour, but by my calculations it's more like 1/2 an hour.
Had a friend take his Yukon in to the dealer for the second water pump in just over a year. He told them to flush the radiator, change the belts and the radiator hoses at the same time. They charged the book rate for each item as if it was a separate thing even though the labor on the pump included 90% of the rest of it. With a transmission flush, it was over $1000.
I'm an electrical engineer, and I simply refuse to pay over 5 times what I make an hour for a technican to work on my car, no matter how talented he is. The unfortunate result of that is I end up doing the maintenance and minor repair on lots of relatives' and neighgbors' cars.