I met one shadchan in Boro Park who charged 10,000$. We didn’t pay, so he never redt me anything, but he’s made some very wealthy shidduchim.
Considering the thousands of dollars I paid in travel, clothing, grooming, etc. over the years (I was younger when I met him, older when I got married), I wonder if I had forked over the cash, perhaps I would’ve saved myself $ and found a wealthier spouse – win-win. Oh, well.