Leaking 904 Transmission.

trying to get an idea of what could potentially be wrong with it and only having the diagnosis of: it leaks more when parked, without any further investigation is an exercise in futility.

it literally could be anything from loose pan bolts to a hairline crack in the case.

asking what something would or should cost to fix on an internet forum is just setting yourself up for a whole slew of remarks and discussion that is going to be more noise than information.