Sale is a marketing technique and I have never at all believed. I have worked in a shoe store and the way we attract buyers is to do SALE (Discount), ranging from 20% to 70%... our trick is to increase the price of the item by as much as 50% then give it a 70% discount, so actually, we only give discounts of as much as 20%. the point is sale is a marketing trick.
Indeed its a marketing trick to attract consumers to bite the offer especially for the expensive items then suddenly on sale, for some of us its an opportunity to take advantage. Like in malls everytime they are announcing having sales for the particular days people are eager to go shopping. On the other side, this is opposite for bitcoin because even the price is cheap only few people are buying because they dont understand the benefits of investing and involving themselves in crypto.