In your repricing rule, the 'Include or Exclude Sellers' section allows you to target specific sellers to include or exclude based on their feedback, location, dispatch time and specific sellers.
To exclude a specific country you do not wish to compete with, you can simply click the 'Exclude' button and then select it from the list. You will see that country appear in the text box to the right-hand side.
You can also set to reprice only against specific countries by clicking on the 'Include Only' option instead of exclude.
Our Youtube channel provides a video guide.