With this module your customer can setup an price alert. (customer is informed via email when the product X has price below or equal with desired price)

Example: Customer is on Product A page. He saw the price is 200$. (thinks is too expensive) and decide to setup an price alert.

Customer press "price alert button", fill desired price. (let's say 150$)

When price of Product A is 150$ (or lower) this module send an email to customer.


Full help and details here: http://www.oc-extensions.com/Price-Alert