>I paid £5 including delivery.

While I agree IEEE is evil, the practice is standard among publishers, or any economic entity. It's called price discrimination (http://en.wikipedia.org/wiki/Price_discrimination). The seller usually makes the difference the amount that price arbitrage is unprofitable. The producer (IEEE in this case) often does this to create presence in markets where it would otherwise be uncompetitive: the pricing reflects the cost only of printing and getting the book to the customer. Do we all want to buy books at South Asian prices? YES! Can we: No! That would drive the producers dead right away.