28% on the first HK$400,000 of the hammer price;
27% of the hammer price of amounts in excess of HK$400,000 up to and including HK$7,500,000;
21% of the hammer price of amounts in excess of HK$7,500,000 up to and including HK$50,000,000;
and 14.5% of the hammer price of any amounts in excess of HK$50,000,000.