The word “imagine” is a hypnotic word. It does not let the person’s resistant kicks in so easily.
Because to imagine something, it does not cost the person anything. Also, if what is imagined is something positive, it acts on the “feel good” effect in that person.
That is why some sales persons like to use the word “imagine”. It gives their buyer more hope for a better life through their imagination. Usually they can get a positive outcome from the use of this word.