We replaced three trans pan gasets before it was discovered that the leak was from the little O-ring on the dipstick tube where it goes into the pan. I don't remember the gasket replacement cost; I do remember that it can be a very mess job. The O-ring replacement was very easy.
This info probably to late for Miss Jade, but it might help someone.
Thanks for your response, not too late, I am going to try some seal conditioner made by lucus first, heard great things about it, if not, then I guess I'll have to replace the seal and then sell that dang thing.