To change the price of a live app, please log into your developer portal and go to “Apps & Services” > the app’s “Current Version (Live)” entry > “Availability & Pricing” tab > “Edit”.
At “Are you charging for this app?” you have the choice of setting a base price and having the list price automatically calculated for you, or setting your own list price for every marketplace. After making the desired changes, please hit “Save”, and “Submit App” to update this information in our systems. Please note that it can take up to 4 hours for your submitted changes to take effect.
If you would like to schedule a temporary price drop for your app, please go to “Apps & Services” > “Promotions” and use the Price Drop feature. This will allow you to schedule temporary price changes without resubmitting your app or changing your original price. For more information on using Price Drop, please see our documentation: Promotions Console