Did you know that you can get product level data in Commission Junction’s performance reporting? This is a really cool, useful feature but can be quite difficult to find unless you know about it. Below is a screenshot of the product performance report from the publisher side. 
In the items you can see the number of items or products sold. To pull the product performance report you simply need to click on this figure and it will open: 
As you can see this gives you a breakdown of how many products you have sold of each type, the total commission and the sale amount for each product. This is particularly useful for cross-selling products, it will give you a good idea of which products you can push more on your site. A pre-requesite for this functionality is that the advertiser has implemented an item-based pixel allowing us to track the products sold. Hope that you find this useful