You will need to install a user script manager extension to install this script.
A lightweight UserScript to add a price history chart to Amazon product pages, powered by Keepa.
Note the chart won't appear if no data.
If you like this script please give a ⭐️ at GitHub
You can change the default settings by editing the
userSettings at the top of the script.
This script is not affiliated with Amazon or Keepa. Use at your own risk.