Content Egg can save the price change points to its own database. Go to
Content Egg > Settings > Price alerts and make sure the
Price history option is checked.
Each time the product is updated, the plugin will save the values of the old and new prices to its own database. Then, you can display the history of price changes using special general shortcodes:
This shortcode will display data for the cheapest product on the page.
You can also use module shortcodes to display a specific module's data, for example:
[content-egg module=Awin template=price_tracker_alert]