Never heard of such a thing in my life. I think you need to find other shadchanim to go to -unless of course, these shadchanim are so amazing that you are practically guaranteed to find your zivug, in which case it might be worth it to try to raise the money.
I only remember being charged once or twice just to meet the shadchan, and it was a relatively minimal amount – maybe 100 shekalim, or something like that.