I think escrow services works for both parties, that's keeps the fosters the business relation and sees it to the end, so I think the OP is right trying to find an escrow but the other party he or she wants to get involved in a business with would also have to agree with the reputation and maybe the commission of the escrow before they can go ahead, I don't know their purpose but if it was in a purchase of crypto-currency then exchanges like binance peer2peer would be better. But regardless those escrows has good reputation in the business.