A Vacuum Servo also known as a power booster or power brake unit uses a vacuum to multiply the drivers pedal effort and apply that effort to the master cylinder. The vacuum can be generated in two distinct methods, dependent on the type of internal combustion engine, or other motive force (as in electric vehicles).
1 Hair length. 2  The cost of an updo hairstyle depends on the length of the hair. 3  Most salons quote starting prices, which increase the longer the clientâs hair is. 4  Hair at the middle of the back is regarded in salons as very long hair and often calls for higher rates. On average, an updo is going to cost anywhere from $45 to as much as $80. 2  Generally, bridal parties are going to pay more than those that walk in for a casual event.
How much do hair extensions cost? On average, the cost of hair extensions will depend on the type you want, quality, the salon you choose, the amount of hair you have and the geographical location. Extensions can be as little as $300 to more than $3,500. For example, a popular method, such as the keratin bond extensions, can cost $700 to $1,800, while some stylists may simply charge $3 to $5 per strand. The average head needs about 200 to 250 strands to put it in perspective.