A free mod for Mount & Blade II: Bannerlord, by HLC.

True Army Costs is a mod that allows you to change the costs of recruitment and upgrades of your units in the game. This is an amazing change as it is highly likely that the player will find the new costs to be much more reasonable. 

This change is highly recommended to be installed with the True Gameplay Overhaul pack as it contains a lot of great mods.

The first thing you will notice is that the recruitment costs and upgrade costs have been reduced. In addition, you will also notice that the prices for different items have been changed.