Why do the Sales Reports show a different COGS value to the Xero/QBO COGS Break-down report?

My Sales by Customer (Invoice Date) shows a different COGS value to the Xero/QBO COGS Break-down Report. 

Answer

The Xero/QBO COGS Break-down report will show the actual COGS values calculated for each sales order. The Sales Analysis Reports provide you with an estimated COGS value. The estimated COGS values are based off the latest landed cost. Please note that actual COGS value will only calculate one a sales order has been invoiced, fully dispatched and imported to your accounting system. 

10/6/2017 - Mara