Some razors, like Gillette’s Fusion and Venus razors, have disposable heads. The razor comes with an initial pack with a razor handle plus three or four heads; after that, you need to buy refills separately.
a. Where do you think Gillette gets more revenue: By selling the initial pack or by selling the refills?
b. The next time you buy a new razor, are you going to spend more time looking at the price of the razor or at the price of the refills?