6% Agent Referral Fee?

[John Buchanan]

This past week an agent I know contacted me about an owner of 3 multifamily properties he wants to sell. its not currently listed on the MLS. the agent wants a 6% referral fee for introducing me to the seller. asking price is $1.5M, so the referral fee is $90k. is that normal/reasonable? seems steep considering there's one 1 agent involved, and he wants to the buyer to pay the fee vs. the seller.

thanks