There is a math problem in this game. Fuel costs $500 and is good for 100 km. Pumpkin farm is 10 km away, so it costs $100 in fuel to go there and back. Pumpkins are worth $20 each, so if you go to the pumpkin farm for less than 5 pumpkins you are losing money. Going to the onion farm costs $150, so you need at least 15 onions to break even. And going to the apple farm costs $200, so you need 8 apples at least. It is also possible to do combinations: 6 apples + 3 onions + 1 pumpkin, or 11 onions + 2 pumpkins, etc.
The problem is, most of the orders I get don't cover the cost of going to the farms, so I don't go and then the farmers get mad at me. I'm not doing business with those guys anymore 😆