If it's a foregone conclusion that, in order to sleep with them, one must simply ply them with wine and food, then yes, they are prostitutes-- rather inexpensive ones, at that.
Otherwise, it's a speculative effort on your part, and if it "pays off", it's an act between consenting adults.
Everyone has an ahole and an opinion, but the question was not addressed to you, and there were no qualifiers in the question are the other-persons statement.