Tzippi, my parents and many others did the same and found out the going rate pretty easily too; therefore, I suspect the question was asked theoretically and not l’maiseh.
I’ve set up approx. 500 shidduchim, 3 of them successful, and this was by far my NICEST experience:
The couple went out 5 times, boy was ready to propose, girl wasn’t sure. She had to call her sem teacher in E”Y, couldn’t reach her for a week, then stalled for time getting back to me, and finally came back with a NO.
The BOY’S parents bought me a gorgeous crystal gift and wrote a beautiful poem about it being “crystal clear that there’s a Master Plan up there” to thank me for all the time and effort I expended on behalf of their son.
You bet I’d set him up again…in a jiffy. What middos tovos! (Ok, ok, for the crystal)