A keen-eyed member of the SPF group on Facebook has noticed that Amazon is beta-testing a new search result page.
As you can see in the above screenshot, some users are seeing results that show a price range rather than a single price. (When I tried to duplicate this, I got the older column of results rather than a grid.)
Every so often Amazon quietly starts testing one or more variations of existing pages. For example, a few weeks back we got a new layout for author pages.
Have you seen either of the new pages?