Important Factors to Consider when Purchasing Wigs for women There are a variety of factors that determine the cost of a wig. Human hair wigs are most expensive, although some are made of synthetic materials. Natural human hair lace comb hats are also the most expensive. While they're typically less expensive but require more attention. It's possible that they'll be affected by humidity and the weather and may need to be changed or dyed to make it look the best. Because of these factors you need to think about whether the expense of a natural human hair bob is worth the extra cost.