I know many (probably most) of you don't like buying books on Amazon, but it's my main source when acquiring new items for my collection (I'm not an avid collector to be fair; one or two books a month is enough for me).

Some months ago I stumbled across a nice add-on for chrome/edge called KEEPA: it checks and inform the price history of any item on Amazon (not only books). It's a nice tool for those looking for nice deals on the platform:

The graph is quite easy to understand: yellow line for item sold by Amazon itself, blue for 3rd party new, black for used. You can stretch the graph to show only one day, one week, one month, three months, one year or since the item was announced.

This alone is nice enough to follow price drops/raises, but its best feature is price tracking:

Once added to your browser it will load automatically on any amazon product page, right below the description:

To track a product and being notified of price drops you will have to sign up (for free) in the keepa webpage.

I know most of you hate Amazon book handling (I had some unpleasant experiences as well), but lately they improved a lot. And like I said, you can use this for whatever item you wish, not only books.

For those hunting for good deals, it may worth give this tool a try.