Saying that art is for sale, you need to be more precise in terms of «a work of art» and «art».
Art cannot be bought, it is ephemeral, it is like a feeling, a sensation. It is something that cannot be touched, it is global, it is in the intellect, in perception, in the personality. But a work of art – is a picture, and it is possible to purchase. And the picture could excite the consciousness, and maybe even the unconscious, to the perception of Art and fine lines of beauty