Priceheat is “A one-click Amazon price checker, a bookmarklet, a widget, price comparison 2.0.” Drag the priceheat link to your bookmarks bar and when you’re on an Amazon item page, click it to see a comparison of prices at other sites.
I know that there are many similar price comparison sites, like Froogle, MySimon, and Price Watch, but priceheat is a very easy and elegant solution when you know exactly what you want.
