dealerships love to replace trannys at over inflated prices. its why most times they can talk the person into trading it in on something newer, as opposed to paying a 3350 bill. now, after the car gets traded in, the dealer doesnt put a new tranny in, they source a used one from a junkyard for 300 bucks, install it, then sell car for profit.
You, should ask for a junkyard transmission (they come with warranty), and go with it.