How much is it also a part of US buying culture in which people are so accustomed to waiting for sales? Not sure if it’s similar in other countries.
I don’t remember the last time I bought clothes or shoes on sale but it has been ages.
This may be more pronounced in the US, but I still see it a lot in the UK. The one thing we don't have is final sale, as all online items need to be returnable under distance selling regulations.