Many years ago, I went to the Great Wall outside of Beijing. As I was coming down to the parking lot, some many vendors wanted to sell me TShirts etc. I kept on saying two words to them "Tài guìle" and their prices immediately dropped.
So seeing the ladies in Flushing, when they ask. ..." masagie" and they say $80, just say "Tài guìle" over and over until they tell you a price you like
PS
If you are a foreigner Lol ( I am making a joke here, get off my case) , and can not pronounce "Tài guìle " try learning how to from Goggle.