I think it's important that we have an understanding of whether or not the Minister sees there being a threshold here where the revenue being obtained would be so little as to outweigh the benefit of having this clause at all—that is, potentially having some sort of a review mechanism to allow for the fact that if the telecommunications industry has to undertake incredibly costly upgrades in order to chase what may be a small amount of revenue, the Minister or IRD would admit at that point that this is a poor idea. National Party members expressed in our minority view that we don't believe that the existing rules are inconsistent with best practice as has been claimed, and we believe that mobile roaming charges should continue to be zero rated. They are exported services consumed by New Zealanders overseas, and applying GST to such services, we continue to believe, is inconsistent with the Goods and Services Tax Act. So it is in that context that I ask: how much revenue will this get, how much will it cost to get that revenue, and who bears the cost of gathering that revenue? 