You Keep Searching After You Already Found A Good Offer
Eight traits, and not one of them is personality. Each one comes from published research, and each one shows up as something a person does, again, when it would be easier not to.
Amos Tversky and Daniel Kahneman showed how strongly a first number shapes a decision. They called it anchoring, and it works just as well on people who know all about it. Knowing is not the trait. The trait is the pause, the second source, the quiet refusal to take the first figure as the true shape of the thing.
Richard Thaler separated two values inside every purchase: what the thing is worth to you, and what the deal itself feels worth. He called the second one transaction utility. The bargain is a good in its own right, and it can be sold to you without any other good attached.
Julian Rotter described locus of control, whether an outcome comes down to what you do or to things already decided elsewhere. It decides whether a printed price reads like weather or like an opening offer. Nothing about the tag changes. Only the assumption about who set it.
The other five cover rumination at night, searching long after something good was found, telling the story of a saving out loud, arranging the room so that waiting is possible, and the slip that stays in the drawer past its date. Keep count as you go.