The complex hollow-box design also means that replacement blades are very expensive and have long leadtimes.

Unless the metal or plastic arm of a windshield wiper has been damaged or bent, one generally needs to install only a replacement blade.

But just as every new Gillette razor eventually spawns rival replacement blades, the new coffee makers are already stimulating sales of rival pods.

Additionally, replacement blades offer significant savings over metal propeller repairs.

The subsequent consumer demand for replacement blades put the shaving industry on course toward its present form with Gillette as a dominant force.

Only the more powerful replacement blade that God gives Beowulf is capable of destroying evil.

When all the individual segments are used, the knife may be thrown away, or, more often, refilled with a replacement blade.

Since its first safety razor almost a century ago, Gillette has always conceived the actual razor mainly as an inducement for selling replacement blades.

For a shave, I relied on my Gillette Mach3 (which, by the way, is an excellent razor, though it does require expensive replacement blades).

An example of this is razors, you pay an initial cost for the razor and then pay for the replacement blades.