Hi Lee,

You can override the presenter responsible for driving the EditProduct UIs.

You do it by inheriting EditProductPresenter and overriding the WireEvents() method and wire up additional event handlers to the Save event:

public class CustomEditProductPresenter
{
  public override WireEvents
  (
    base.WireEvents();
    View.Save += myEventHandler;
  )
} 

To replace the default presenter with your own you need to modify the Presenters.config file found in /umbraco/ucommerce/configuration

uCommerce 3 will have a pipeline baked in, which will make the process a bit easier.