Firefox 2.x
Firefox 3.x
Internet Explorer 6
Internet Explorer 7
Windows
Mac OS X
Linux
"PriceAdvance is an add-on for Firefox and Internet Explorer which serves as an automatic price comparison tool. While browsing an item at one of the supported merchants such as Amazon.com and Best Buy, prices are retrieved for the same item from several other popular merchants and are displayed in a small window that overlays your browser. You can then view the item from those other merchants with just a simple click of the mouse. The list of merchants supported by PriceAdvance could stand to be a little bigger, but it does include heavyweights like Kmart, Target, and J&R as well as the aforementioned sites."
"Browse for products at your favorite online stores. PriceAdvance automatically compares prices from our supported merchants. Buy from merchants you know and trust. We only show you prices from well known, reputable stores. Save money effortlessly. We do all the price comparison research for you. All you have to do is shop."
