Dropping the price of your existing listings is a great way to get the attention of potential buyers. PangoBooks pushes listings with new price-drops to the top of the feed in the app, with an icon indicating the percent recently discounted.
The requirements for your listing to be reshared are as follows:
Drop must be at least $0.50
Must not have been dropped in the last 12 hours
Must not have been dropped within 12 hours of initial listing
Only 5 drops are re-listed for a user in a 24 hour period