Buyer's Remorse
Paradox of Choice
Theory by American psychologist Barry Schwartz claiming that, after a certain threshold is reached, an increase in the number of choices will cause a significant amount of psychological distress.
Buyer's Stockholm Syndrome
a cognitive bias whereby someone who has purchased an expensive product or service overlooks any faults or defects in order to justify their purchase. It is a special case of choice-supportive bias.
Cognitive Dissonance
the mental stress or discomfort experienced by an individual who holds two or more contradictory beliefs, ideas, or values at the same time, or is confronted by new information that conflicts with existing beliefs, ideas, or values