Anon is right, like always
The thing is if you nicely ask, thats ok but never haggle, thats a big turn of.
It depends if you sound nice to the lady or she is in a good mood, then she might give you discount but once she says no, better accept it.
Also some ladies have many extras included in the price, so maybe if you tell them you dont need CIM and anal or owo, then she might reduce the price.