I agree but think of it from a client perspective. If a service is $450 and they don’t want to be a bad tipper they will hit the 20% which is $90. So now the total comes to $540. I know not everyone will tip and some tip more. Just getting everyone’s opinion. Also- I don’t need a tip to tell me I did a great job. A client’s continuing to return is complimentary enough and speaks volumes.