simpleng analogy for ymmv kung dalawa kayong GM availing service from the same Thera and standard ES is 1K , say for example GM1 for 1K will get the standard ES lang maybe because transactional lang ang engagement with thera, Pero say si GM2 sweet sya sa same Thera and occasionally may pa chocolate pa or something special and very nice ang treatment nya yung 1K nya baka hindi lang standard ES ang ibigay sa kanya and in most cases may extra pa . Same Thera same service but different outcome and experience, So the moral of the story is treat them with kindness and respect and sure ako balik sayo is more than what you asked for.