Open the store check on a paid plan and scroll to Prices around the world.
For every Steam region you see what games like yours typically charge compared with their US price, and how your own regional prices sit against that. Regions where your price is far above or below the usual are flagged, so you know where to look.
If your game has no price on Steam yet, you see what the typical regional prices would mean for your US price.
Tip: for the bigger picture, see what common prices cost in every region on our regional prices page.