If we look at this website appshopper.com, that website seems to automatically update its prices with the current prices of the App Store.
How can I do that?
Questions on Ask Different are expected to relate to Apple hardware or software within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here. If this question can be reworded to fit the rules in the help center, please edit the question.