If you have multiple suppliers of products for a department or category then use a Supplier Comparison report in your newsagency software to compare the performance of the suppliers. It’s the best way to compare the value of similar suppliers to your business.
Too often, newsagent suppliers use their own reports when discussing performance with newsagents. Their reports usually only show sell in when you want to focus on what you have sold.
Check out the report in your newsagency software.