I've been searching forever. Does anyone know which episode it is where Mr. Douglas finds out the farm made $16 and everyone in town is really impressed?

I don't remember one exactly like that. I know in the "Case of the Hooterville Refund Fraud" everyone saw Oliver get an $80 income tax refund and were amazed. Especially since every year they always lost money on their farms.

Okay, 4 years later I finally realized which episode this is.

"It's Human to be Humane" from season 2.

Come back Peter Suciu. Your question has been answered.