Reader Lara in Orlando asked: “If rounded offers invite haggling, what about products with fixed prices, like retail or D2C?” Great question. I wrote about how Columbia University research showed that precise opening offers (like $5,015 instead of $5,000) make people see the seller as informed and deliberate. Buyers assume there’s less wiggle room because the number feels like the result of calculation. In D2C or retail, where prices are fixed, the same psychology still applies. Just earlier....