Factors to Consider When Buying Wigs for women A variety of variables determine the cost of the cost of a wig. Human hair wigs tend to be the most expensive, although some models are made from synthetic materials. The natural human hair combs are also the most expensive. Although they're usually less costly but they're more prone to wear and tear. They'll react to humidity and the weather and might need to be restyled or re-dyed to appear its best. Because of these factors, you should consider whether the price of a natural human hair Bob is worth the expense.