Where part of the costs for an exporter and producer is distorted, including where a given input is sourced from different sources, that part of the costs should be replaced by undistorted costs.
I gcás ina bhfuil cuid de na costais d'onnmhaireoir agus táirgeoir saofa, lena n-áirítear nuair a fhaightear ionchur ar leith ó fhoinsí éagsula, ba cheart costais neamhshaofa a chur in ionad an chuid sin de na costais.