I can't say it any better than Aaron himself. So, here is what he had to say about the return of his Sales Rank Express:
"Sales Rank Express, my own Amazon sales rank checker, is officially back in operation, after months offline due to changes at Amazon. And it now offers more than ever, including
- Quick sales rank checking of multiple print books on Amazon in nine countries, including Spain, Italy, and China.
- Sales rank checking for Kindle Books in four countries. (Just select “Kindle” in the Format menu for the country you want—U.S., U.K., Germany, or France.)
- More detailed stats on Customer Reviews, with a breakdown by number of stars.
- Charts of the last week’s sales ranks, with visible peaks that let you make quick sales estimates and spot trends. (To see charts, turn on “Tracking” for each title.)
Enjoy! And please spread the word to all your author and publisher friends!"