Price Change Notification?

[AlainGau]

Looks like product prices can be change in ~3 ways: 

1. price rule 

2. cart rule 

3. direct pricing change on product catalog

 

The rules can change a product price on specific time (date + time). 

 

As far as I can see there is no hook that get executed when the price of the product, that is in a cart, get changed (up or down) from the 3 above options (and other if exist). 

 

Where in the core I could add a custom hook to fire some custom logic when the price of a product that is in a cart get changed? I understand that would imply some overrides.

 

in Cart.php, CartRule.php, SpecificPrice.php, SpecificPriceRule.php, other??

 

thanks 

Edited January 8, 2016 by AlainGau (see edit history)