Increase Your Karma Level
The Karma system is a new mechanic introduced in Far Cry 4. Your Karma level reflects the level of loyalty Ajay has towards his allies and increasing your level will net you a good number of rewards. Some of these rewards include lower weapon prices, attachment prices, location map prices, collectible map prices, Ghale homestead item prices, and guns for hire upgrades.
You can increase your Karma level by finding mani wheels in Kyrat and spinning them and obtaining clean animal kills by hunting them with either your knife or bow and arrow. There are also random events that will pop up while you’re moving around in Kyrat. If you see Golden Path members under attack from wild animals or enemy soldiers, help them out and this will increase your Karma level as well.