Do I need to enter my product costs?
This answer describes a capability that is partial today. What follows states exactly where the line is.
Product economics are needed if you want targets derived from product margins. AutoPPC checks whether the required inputs and campaign-group mappings have adequate coverage. A manual Target ACOS is a separate strategy choice when you do not have usable economics.
Unit COGS alone is not the complete margin. Supply selling price, relevant Amazon fees and other applicable variable costs on a consistent currency basis. Review the import preview and any missing or invalid fields before saving.
Stock cover requires adequate inventory and velocity evidence. Entering a cost does not establish how much inventory remains. Likewise, true TACOS requires matching seller total-sales data; advertising reports and costs do not supply that denominator.