TrackIF FireFox Extension

From TrackIF: TrackIF will monitor the sites, pages and searches, and alert you when or if they meet your TrackIF criteria. Track Product prices and when your favorite products go on sale at your favorite websites such as Amazon, Best Buy, Target, Walmart and many more. Track Craigslist items and if the prices change for the listings on the site for any item that lists a price. You could save hundreds of dollars on items such as cars, collectibles, bikes and more. You can also save searches for items on Craigslist so you are notified when new items are listed in your markets of interest. Track dream homes on your favorite real estate sites such as Trulia, MLS, Edina Realty, Remax and hundreds more. Now you'll be the first to know when houses become affordable so you can jump on opportunities. TrackIF your favorite car drops in price on any of the major auto shopping sites such as cars.com, Carsoup, AutoTrader and dozens of other sites. You can also post a search tracker to notify you when new cars makes/models are posted on these sites. Track items on eBay to be notified when the listed price reaches the price you are willing to pay. You can also track if new items of interest are posted to eBay and you get notified when new items are added.