More or less a random thought. I've always been a fan of games like the Guild 2 and various sort of town/business simulators and trading games plus I just remembered that Spice and Wolf exists. I remember trying to implement trade and trade goods into one of my irl D&D campaigns and that was a bit of a cluster fuck due to how wonky 5e's economy is but I still think it would be interesting. Does anyone have any ideas or suggestions on how to make it possible?

My initial idea would be something like the GM has a list of trade goods that have an average price and a list of places to buy and sell from. Each place would have their own price variations and maybe special events/rumors that can change the price of things as well as having their own specialty. The RP then would be the players travelling from place to place trying to get the best deals, pay off their stuff and not starve to death. Maybe with an added things of fighting off bandits or upgrading a truck/wagon.