Talk:Market (Age of Empires II)/@comment-210.48.147.149-20150318080603/@comment-65.28.183.104-20190618074534

There are two different things which affect resource prices. The comodity fee and the difference between the minimum and maximum prices. The comodity fee can be lowered, though the difference between the minimum and maximum prices cannot be altered.

The default is, as you can sell resources down to 14 gold per hundred and buy them for 26 gold per hundred. Dividing 14 by 26 yields ≈ 54%.

After researching Guilds, those numbers become 17 for the minimum selling price and 25 for the minimum buying price. Divide 17 by 25 and you get 68%.

Now the Saracens have 19 for the minimum price for selling items while maintaing 25 for the minimum price for buying items. Dividing 19 by 25 yields 76%. Given that it is stated that the Saracens get a rate of 5%, the commodity fee is equal to 80% of the difference between the least you can sell resources for and the least you can buy them for.