Important Factors to Consider when Purchasing Wigs for women Many factors influence the price of hair wigs. Human hair wigs are most expensive, although certain models are made of synthetic materials. Human hair is naturally laced combs are also among the most costly. While they're typically less expensive but require more attention. Hair bobs react differently to humid conditions and the conditions and could require to be styled or dyed to look its best. Due to these reasons you need to think about whether the price of a natural human hair Bob is worth the expense.