Is escort porn a thing?

Is escort porn a thing? I looked at my husbands search history and found that he was looking up 'local city escorts' where we live and my heart rate went up so bad yall. (Only reason i looked is because I saw a condom in his wallet) I confronted him on it and he said that he was embarrased and that its a kink for him to watch women get payed for s.e.x. and its basically porn. I told him i never heard of something like this before and why is he looking up specifically 'local escorts'???!!! He said there are many of them like that and its just porn to watch. He went on about it is embarassing for him to talk about so I couldnt get any details on what this is. If its porn, shouldnt it be a specific website with categories.. not raw search ups like that??? Im still skeptical so I am going to confront him again on it. He gave a good reason for the condom and i do believe he hasnt cheated or planned to go cheat, but it stills bother me.