Important Factors to Consider when Purchasing Wigs for women A variety of variables determine the cost of the cost of a wig. Human hair wigs are the most expensive, although some models are constructed from synthetic materials. Hair lace made from natural hair comb hats are also the most expensive. Although they're usually less costly but they're more prone to wear and tear. It's possible that they'll be affected by humidity and weather and may need to be changed or dyed for the best appearance. Because of these factors you need to think about whether the cost of a natural human hair bob is worth the extra expense.