Well some of us buy exactly what we planned to buy, only at cheaper prices, and after verifying with price comparison sites.

Beeing unrich[1] for years have given me this skill. I don't frivolously spend money.

[1]: wouldn't say poor as I have had a car most of my adult life, but definitely not rich, maybe "not always knowing in advance how to pay for food towards the end of the month" and "being very happy hand me downs" is a good explanation?