Once a property is on the market you cannot change its price as normal by editing the Property Details. Instead, click on the Property Details link in the Property Menu on the right and a Change Price link will be displayed alongside the property's price.
This will pop-up a window where you can enter the property's new price and change the price qualifier, if needed.
Leaving the Send Automated Alerts box ticked will mean that an email will be sent to matching applicants that have subscribed to email alerts notifying them on the change in price of the property. Press the Save button to save the changes to the property's price.
How to then update the property's price on the portals
If you are advertising with portals (Rightmove, Zoopla etc) and the property is on the market then you will want to update the property's price on your portal listings. For more information on how to do this, click here.