There are many stores out there that offer a 30 day price guarantee which means if the price goes down after you’ve bought it, they’ll refund you the difference.
PriceProtectr will check a stores’ website for price reductions for 30 days after you’ve purchased the product if they offer a 30 day price guarantee. It’s a fairly new service and they’re always adding new stores to their list.
Stores or services: In all,there are 58 supported sites. Some of them include (in alphabetical order):
RefundPlease.com
Much like PriceProtectr, RefundPlease.com is all about saving you money by notifying you when something you’ve purchased has gone down in price within 30 days of purchase. All you’ll need is the ISBN (of it’s a book) or the ASIN# for non-books, and they’ll be able to track the price of the item for you.