Exclusive: Economists say falling house prices are largely in the more expensive parts of Sydney and Melbourne’s markets and are less likely to affect first-time property owners Fears that first-time buyers with tiny deposits will find their mortgages are worth more than their homes may be assuaged by new data showing falling prices are concentrated in the top end of the Sydney and Melbourne property markets. Climbing inflation, interest rates and worries about the economic fallout from the Midd