how bout just to replace the transmision fluid pan, anybody know how much that might cost (including labor)?

are you sure youre not leaking motor oil? It is much more common to pop the motor oil pan when bottoming out. On the S4's, there is a sensor on the bottom of the pan that usually gets destroyed along with it, so take a look at that too.

nope, definitely not motor oil. i know because the same thing happened before and both motor oil and transmission fluid came out that time

is your car even lowered?

nope. just a quick drop i didn't see coming on back roads