Some cosmesis prosthetics today look so lifelike that some people can not tell the difference between them and a real hand, foot or leg. Some custom-made cosmeses include details like veins, human hair, and freckles to make them look more realistic. Even finger nails that can be polished are an available option. As expected, a custom-made prosthesis can be expensive, often costing thousands of dollars. But for some, the self-confidence that it provides is definitely worth the expense.