The Compare Product Cost feature in Project Editor allows you to compare the Unit Cost field for Products in the Project with the Unit Cost field in your Catalog.
To use this feature, select the Products that you want to compare and click Catalog > Compare Product Cost in the Catalog tab.
This will open the Compare with Catalog Products form.
You can manually Edit any product via the Edit button or you can use the Update from Catalog and Update to Catalog features.
There are price options in the bottom left corner of the interface.
If you want to export the comparison for review, you can export it to either PDF or Excel.