I use AdWords and Google Products and I've been using Product ad extensions in AdWords to display products along with my ads. I recently started using Sitelinks ad extensions as well, and I just realized something.
I append a tracking ID to the landing page URL of my ads in order to calculate the appropriate bid for each ad based on the conversions and profit associated with clicks on each ad. I realized that profit from clicks on my Sitelinks ad extensions are not considered when calculating my bids since the landing page URLs are static and don't include a tracking ID to identify the particular ad which was clicked. Is this also the case with Product ad extensions?
This is a big deal because about half of my AdWords spend is due to clicks on my ad extensions.
If I use the internal AdWords cost/conversion system instead of my own, would Google associate ad extension clicks with a particular ad when calculating cost/conversion for each ad so I can determine the appropriate bid for each ad?