Inside the T-Case

In case you've ever wondered what the inside of a transfer case (Sp. caja reductora) looks like, here you are, courtesy of my new mechanic friend Luciano. In case you've ever wondered what a transfer case was/is, may I recommend Wikipedia. If you're that interested.

This is the T-case from my Jeep Cherokee Classic 2000, and now it's back in again and running without that nasty noise going uphill. Luciano is a few pesos the richer and I'm a few ??? the happier. I put ??? as I don't really know what the standard unit of happiness is. Suggestions welcome.