[product_extended_segmentation] Price don't get updated when is lesser, a new behavior

Created by: osvalr

I see that a new behavior (feature) on master branch in commit https://github.com/Vauxoo/addons-vauxoo/commit/c3930d76d7c9ff4187e9ddaad070621d31ef8e1b in #702 it updates the product cost only when the new one is higher (or equal), and I have some doubts about this:

• How it is supported this, what is the general rule that address to only get the cost updated when the price is higher?
• Can be a context flag a wildcard for this?

This is ONLY to clarify things that I am (and maybe others are) missing related to this point