Cbk Price Subscribe is a plugin that will notify your users if the price reaches the amount set in the user alert. Your users don’t have to follow the ads every day if they want to know when the price is lower, the alert will be sent automatically after the price reach the limit set by the user.
This plugin will include an alert form on the item page if the item has a price set so the users can set an alert for each item. The alert is set with user email and the user don’t need an account to set this alert.