Anerol,
I think I meant it varies with the individual. Not everyone wishes to buy the same art you create at the same price at the same time, do they?
In the movie "The Devil Wears Prada", a fashion icon played my Meryl Streep challenges interning Ann Hathaway's snickering at the choices consumers make. Apparently a lot of our needs are manufactured by the fashion industry so we buy according to what they decide through advertising seasonally.
Also, our tastes and other inclinations change over time, if we're allowed to nurture them.
In the book by Thomas Green on meditation, he describes how to find out the perfect gift for a person - ask them! He worked in the Phillipines, and there was some surprise that the favourite for a gift for someone was a smelly blue cheese which everyone couldn't stand. Yet that had value for the person.
I've also wished, at a very young age, that I wouldn't be influenced by these superficial "winds" so I can live life truthfuly instead of by someone else's standards. As I grow older, I realize that beauty is something which wanes, by the innate qualities and journeys of people who pass by me daily are only part of a cultures' reflection instead of one person's creation that day.