Prices of luxury properties appreciated by 8-12 per cent during the last year across major cities and has breached the 2015 peak level, according to India Sotheby's International Realty. Delhi's India Gate and Mumbai's Marine Drive In its annual 'Luxury Outlook Survey 2023', India Sotheby's International Realty revealed that 61 per cent of High-Net-worth Individuals and Ultra High-Net-worth Individuals are …