Often made of real human hair, the tap extensions are high in demand. With the increasing trends and resulting demands, the tape extensions cost around $200 for a partial extension and application with the help of professionals. However, other types of extensions for thin hair cost a bit more than that. The reason for this cost difference is because of the time it takes to adjust the extensions into natural hair. However, compared to other types of extension, the tape-in are affordable for their ease of use.