That’s not a broad range of schools at all. Maybe the volunteer is great with general application tips and advice on the process, but I feel sorry for the kids who have no interest in those types of schools. Recommending Rose Hulman to a potential Humanities major is not helpful.
To answer the OP’s question, I have never heard of paid college recruiters, but if that was a thing, surely they’d be recruiting for for-profit colleges? Those are all non-profits, I believe.