This is an excellent article on how you take your art to market. The underlying message is simple – you are selling a luxury and your market is only those people that can afford luxuries. Everybody else is the wrong customer, for an artist selling original, hand made, one-off paintings.
It may be the case that you wish everybody could afford to pay what your art is really worth, but in the current economic system they cannot, by design. While the current economic system prevails, unfortunately you must, for your own survival within it, sell only to those that can afford to pay what your art is really worth. You aren’t Walmart and your art is not a commodity product.
It would be interesting to see if the same thinking can be applied to the making of music. What if you made an album exclusively for a handful of people that can afford to buy luxuries? They’d hardly be the first to pirate the works from others or allow their expensive purchase to be pirated, would they? Just a thought.