HK is a piece of piss to buy stuff for a good price
Household stuff, Jusco, Ikea, Sogo etc etc which are not at all expensive.
Food, Park N Shop, Wellcome are not expensive at all. Wet Markets even cheaper for basics like meat and fruit n veg.
Clothes, Get it tailored here in HK or go to Places like H&M, Zara etc. Pricewise not too far away from UK.
It seems some people are too lazy to shop around and explore.