Because that's not how I understood your question. I interpreted it as asking if GST is included as part of revenue then expensed. This is not the case as GST i

Because that's not how I understood your question. I interpreted it as asking if GST is included as part of revenue then expensed. This is not the case as GST is a tax collected on behalf of the government so it is always regarded as a liability. As to what you intended, perhaps. Perhaps not. I'm not an expert in sales of Apple products, you'd need market research to see if a 13% discount would result in an appreciable amount of sales.