Frucall (www.frucall.com) is a free service that lets you comparison shop by calling a toll-free number (1 888 DO FRUCALL, try it!) and entering a product’s barcode. You are then given the lowest prices online, at which point you can bookmark a particular price and vendor if you have a Frucall login, and access the information later when you get home, or get connected to the vendor right there and then. You can still use the service if you don’t register, though.

Frucall recently added Frucall Text and Frucall mWeb which…well, you can guess what they do. I’ve used this service several times and find it particularly useful when I’m out at a store wondering whether I’ve found a good deal. More often than not Frucall will find a lower price online. They’ll even give you an estimated total including shipping and handling if you provide a zip code.