Important Factors to Consider when Purchasing Wigs for women Many factors influence the cost of hair wigs. Human hair wigs are most costly, however certain models are made of synthetic materials. Hair lace made from natural hair comb hats are also among the most costly. While they're typically less expensive but they're more prone to wear and tear. The hair will react with humidity and weather and might need to be styled or dyed for the best appearance. Due to these reasons it is important to consider whether the price of a natural human hair bob is worth the extra expense.