I been too places where the provider at a shop had long nails and scratching my back with them during the massage. Also they when i asked about a certain area to be more focused on she used it against me
at the end and told me its gonna be a $30 tip like wtf. In those situations its kinda hard cause you wanna make a scene.
But yes majority of the time tip when you feel like they did a good job.
ALSO tipping at an indy and tipping at a shop completely things. Tipping at an indy is straight tipping, Tipping at a shop usually means the money that the provider will be making after room fee.