Aspects to Take into Account When Buying Wigs for Women A number of factors determine the price of hair wigs. Human hair wigs are most expensive, but some are made of synthetic materials. Hair lace made from natural hair comb hats are also the most expensive. Although they're generally less expensive but they're more prone to wear and tear. They'll react to humidity as well as the weather and might need to be restyled or re-dyed to look its best. In light of this it is important to consider whether the cost of a natural human hair bob is worth the added cost.