The Real Estate Board of Greater Vancouver uses the resale home price index (HPI), which strips out the priciest properties, because it asserts that calculation serves as a better barometer of trends than average prices.
http://www.theglobeandmail.com/report-on-business/economy/housing/the-real-estate-beat/price-for-detached-home-in-greater-vancouver-nears-1-million/article21887389/