So how much have you paid to have your transmission fluid changed if done at a shop, or how much is it for the fluid (and how much fluid is needed) and how much time should a shop charge to change it if I brought it in myself? I'm running at just over 126,000 miles and I don't know if it's ever been changed before (hasn't been by me), so needless to say I'm anxious to get it done. Unfortunately, I don't have the facilities or tools to do a proper job myself.

My car is a 95 540i, auto transmission.

Many thanks.