Free samples with a side of serotonin: Welcome to the Costco feeding frenzy - USA Today

This article explores the psychological appeal of Costco's free sample program and its effectiveness as a retail marketing strategy. It highlights how the experience influences consumer behavior and drives impulse purchases.
Why it matters
Understanding retail psychology helps explain how large-scale warehouse clubs maintain customer loyalty and increase average transaction values.
Hear this story Caitlin Johnson has a motto she swears by. "I don’t tell Costco what I need. Costco tells me what I need ."
The article is a lighthearted feature piece focusing on consumer behavior without political or social agenda.
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