Yes, plenty of KTV's that play bachelor party games, all the way to the bare-bottom lap dance (contact allowed!) and happy ending. Price is anywhere from NT$2.5K to 4K per 2hours, 7 nights a week, including alcohol. Price depends on the quality of the establishment/girls. There is a regular poster here that owns/manages such an establishment on the East side of town, only about 10 minutes from the hotel you'll be staying at. You can search the threads, not sure if the place is still there or not.