Razor blades are expensive because of the precision, engineering, and artistry that goes into making them. It all starts with thin sheets of steel that are ground to be sharp at the tip and strong at the base. To make them even stronger, layers of diamond-like carbon are applied to each blade and then a layer of lubricating polymer is added for a smoother glide. The pack of four razor blades is affordable and offers the same high-precision shaving experience as more expensive replacement cartridges.
Disposable razors have a simpler design and are usually cheaper, but they are unsustainable and often have lower quality blades. Finally, blades and plastic components are assembled through numerous workstations, where small blade parts are carefully held by vacuum lines and placed in the slots of the cartridges. The production process behind these high-end razors is complex and requires a lot of precision. This is why razor blades are so expensive. The dimensions of the blade are so tiny that a support structure must also be produced to secure it within the cartridge.
This adds to the cost of production, as well as the cost of materials used in making the blades. The artistry involved in making a great razor is also a factor in why they are so expensive. The craftsmanship that goes into making each blade is what makes them so special. The attention to detail and quality control ensures that each blade is perfect for its intended purpose. The combination of precision engineering, artistry, and quality control makes razor blades expensive. But it's worth it for those who want a close shave without any nicks or cuts.