PRO: you are disagreeing with Halacha pesuka.The earlier posters got it correct. There is a absolute bonfide Halachic obligation to give shadchanus in line with the going rate. Unless you live in a community where what you write,
“if you can afford $250 or even $36, all acceptable”
is the accepted standard practice, then no, it is NOT acceptable.
For the recored i am NOT a shadchan.