Aspects to Take into Account When Buying Wigs for Women Many factors influence the price of a wig. Human hair wigs are the most costly, however some are made of synthetic materials. Natural human hair lace comb hats are also among the most costly. Although they're usually less costly, they require more maintenance. The hair will react with humidity as well as the weather , and could need to be styled or dyed for the best appearance. Because of these factors it is important to consider whether the cost of a natural human hair bob is worth the extra expense.