Aspects to Take into Account When Buying Wigs for women A number of factors determine the cost of the cost of a wig. Human hair wigs are among the most costly, though some models are made from synthetic materials. The natural human hair combs are also among the most costly. While they're often more affordable, they require more maintenance. It's possible that they'll be affected by humidity as well as the weather and might need to be styled or dyed to appear its best. Because of these factors you must consider whether the expense of a natural human hair bob is worth the extra cost.