This sort of person is a spend-a-holic. They use "sales" as an excuse to engage in unnecessary discretionary spending.
LOL yes I had a friend who would buy stuff because it was on sale and talk about how much money he "saved." I would always ask "do you have more or less money now?"
alt Hacker News
LOL yes I had a friend who would buy stuff because it was on sale and talk about how much money he "saved." I would always ask "do you have more or less money now?"