Does anyone else regularly see large price swings on Amazon? I’m in the habit of adding books to my shopping cart until I run out of things to read at home, then buying whatever is in my cart at the time. Thus I have books sitting in my cart for a month or so and every time you visit your cart amazon notifies you if prices have changed. Managing Humans dropped by $9 and The Algorithm Design Manual jumped by $25. The next two price changes are more characteristic, moving around by a couple cents.