Supermarkets here suck dirty dog balls or @chuckster007's nuts (dogs are probably cleaner).
People will chime in about "no space" but strangely enough if you pop over to Macau you can find lots of decent wines under 50HKD while here you struggle to find one under 100 that isn't a buy 2-3 or whatever BS they are doing to sell things at a remotely reasonable cost.
Supermarkets are especially annoying this time of year when every isle is a maze of boxes because HK (and the oligarchy) likes to ignore simple solutions like basements for storage, that's why there's an army of delivery trucks everywhere all the time.
Prices are often incorrect as well, especially at WELLCOME, so you always have to watch carefully at checkout. Back home we have price accuracy laws, anything valued at 10CAD that was inaccurate is free while over 10CAD you get 10CAD the price.
Then there is the checkout culture of taking as much time as humanly possible before you get out of the way so the next person can be served. Hold on let me just see... Where is the YUU app? Oh I'll just download and reinstall it, oops I'm not registered, hold on... OK, I also have a pile of coupons to apply, awesome, now that I've paid I will now start packing my groceries, and after I'll leave my cart behind making sure it blocks your exit.
During the pandemic the two big chains got government handouts even though they're the one industry that actually did better!