Aspects to Take into Account When Buying Wigs for women A number of factors determine the price of the cost of a wig. Human hair wigs are the most expensive, although some models are made from synthetic materials. Hair lace made from natural hair combs are also the most expensive. Although they're generally less expensive but they're more prone to wear and tear. Hair bobs react differently to humid conditions and weather , and could need to be dyed or styled to look its best. Due to these reasons you need to think about whether the expense of a natural human hair Bob is worth the cost.