Things to consider when buying Wigs for Women A number of factors determine the price of the cost of a wig. Human hair wigs are among the most expensive, although some are made of synthetic materials. The natural human hair combs are also the most expensive. Although they're generally less expensive however, they need more care. They'll react to humidity and weather and may need to be changed or dyed to make it look the best. In light of this you must consider whether the cost of purchasing a natural human hair bob is worth the additional cost.