History: King Gillette wanted to invent another way of shaving so he could get rich. He developed a handle and replaceable blade system. He sold the razors at a loss so people would buy them, then he made up the loss and a lot more by selling them blades that they then had to have. They followed the same concept with the Trac II. The handles were cheap, but the blades were where they made the money. And on it has gone. There are a number of discussions about this on this forum.