It cost me 111.10 for the 10K mile service on my wife's 2005 RX 330. It included an oil and filter change, tire rotation and balance, complete brake inspection, running light inspection, topping off of all fluids, 19 point inspection and a courtesy car wash.
You've got to be careful as they will advise you of services that are recommended, not just the services that are necessary. Of course, that may very depending on the conditions in which your wife drives.