The Overhead and Profit Percentage feature allows the Quote Sell Price to be calculated explicitly, by adding preset Overhead and Markup margins to the Buy Price. The percentage values are pre-set in the configuration but can be manually adjusted after loading an item.
The Sell Price is either the Availability Chart item Sell Price, or the Product Buy Price. No calculations are performed on these values.
The Sell Price is calculated from the Buy Prices of the Availability Chart or Product items. On loading an item, the config values for Overhead and Markup Percentages are used. They can be manually changed once loaded (described in more detail below).