Important Factors to Consider when Purchasing Wigs for Women A variety of variables determine the cost of the cost of a wig. Human hair wigs are the most costly, though some are made of synthetic materials. The natural human hair comb hats are also among the most costly. While they're often more affordable but require more attention. The hair will react with humidity and weather and might need to be restyled or re-dyed to appear its best. Due to these reasons you need to think about whether the price of a natural human hair bob is worth the additional cost.