Important Factors to Consider when Purchasing Wigs for Women Many factors influence the cost of an wig. Human hair wigs are most costly, though some models are constructed from synthetic materials. Natural human hair lace combs are also among the most costly. While they're typically less expensive, they require more maintenance. They'll react to humidity and conditions and could require to be restyled or re-dyed for the best appearance. Due to these reasons, you should consider whether the price of a natural human hair bob is worth the additional cost.