Manor Lords is a huge hit in the medieval city-building genre, even though it’s still in Early Access. As with all games in this stage of development, you can expect balance issues, bugs, and game-breaking exploits. Trade is the biggest culprit, and it’s being addressed in the latest Manor Lords patch 0.7.923.
NEW PATCH Manor Lords Patch 0.7.960 Campaign
Manor Lords trade was so broken that most of the improvements in the latest update were focused on fixing the economy. The first thing developer Slavic Magic did was change the cost of trade routes. They are now 50% cheaper if you choose the Trade Logistics development branch, instead of only costing 25 regional wealth (which is nothing). This will make trading certain goods more difficult, forcing you to switch to production.
And if that wasn't enough, the basic cost of opening a trade route has dropped from 12 to 20. In addition, Better Deals' development department has reduced the import tariff on foreign products by 50% instead of eliminating it.
Since trade is tied to the market and the economy of the region, you still need to think about oversupply. The price multiplier for oversupply of goods is now 0.75x for oversupply and 0.5x for critical oversupply.