pricing question: transmission fluid change

...for all of the information and links. I called my indy shop today to ask about their price and the guy I talked to said that he would recommend not changing it because of the problems that it would lead to with the transmission. He was saying that he had a 5 that he sold at 168k miles with nothing done to the transmission, and that the guy that bought it still brings it to their shop and it now has 215k miles on it with nothing done and it's still running fine. He said he would do it if I really wanted, and quoted somewhere around $400 for the fluid, filter, and labor. I didn't ask how much the labor would be if I brought in the other stuff myself. I suppose I'll have to call some other places and see what their prices are, both with and without the fluid and filter.

-Garret