I made a mental note of some of the prices before the 11.11 discount kicked in. The discounts were around 10%, sometimes less. So the Aliexpress regular prices were already way lower.

The thing is, on Aliexpress there are many, many sellers of each of those items and there is often a significant price difference among them. If that is due to quality or delivery times I have not figured it out yet. So I usually buy from the cheapest who has a fair number of sales and few if any complaints in the reviews.