Publishers have traditionally sold textbooks at different prices in different areas of the world. As an example, a textbook that sells for $70 in the U.S. might sell for $5 in India. Although the Indian version might be printed on cheaper paper and lack color illustrations, it provides essentially the same information. Indian customers typically cannot afford to pay U.S. prices. Use the theories of price discrimination to explain this strategy. I am also looking for about two paragraphs on the following question. When would you consider price discrimination as being unethical?