With auction houses Sotheby's and Christie's getting record prices for selling art here, and with the Art Fair growing from strength to strength, Hong Kong's arts market is booming. But it's a paradox. As artists get popular, their work gets expensive, and thus loses its opportunity to communicate their ideas to those who can't afford it. Local artist Amy Cheung asks is price equals artistic value, and at this year's Art Fair she presented her "Chance Machine", a lottery that gives users the chance to win a piece by one of 15participating artists.