Finances
The Professor claims to have created Planet Express to fund his experiments, though the company is frequently on the verge of bankruptcy. This is highlighted during "Future Stock," in which Hermes shows a pie chart of their income, the larger portion of it (approximately 65%) showing a $8 bank error in their favor; and in "Neutopia," in which the company faces foreclosure due to missed mortgage payments. In Futurama: The Game, which may not be considered canon, the Professor laments that the crew never remembers to charge anyone for the deliveries. The Professor is still capable of funding his experiments and paying for the inevitable repairs after the experiments go awry. The Professor states and/or implies in both "A Clone of My Own" and "Anthology of Interest I" that he has a vast fortune saved up.
Read more about this topic: Professor Farnsworth