When my first child got engaged I asked several people what the going rate was in my circles. Iwas told $1,000. That was over 20 years ago. That’s what I paid for a couple of years to each of our shadchanim. Lately I’ve been giving $1,500.
Someone told me she gave the shadchan $1,000 2 years ago and the shadchan was not happy.
By one of my children the shidduch didn’t work out. After 6 months the other side asked someone else to try it again. This time it worked. I asked a Dayan what to do. He said if the second shadchan thought or the shidduch on his own, he gets the fee. If not, (which was the case here)the first shadchan gets 1/3 and the second one gets 2/3. That would have been $350 and $650. We gave the second one $650, and the first one $500.