For $10 per month, the feature adds a \How was your experience?\ section to the top of every Square digital receipt, at which point the consumer can press a smiley face or sad face to indicate their satisfaction. \The ability to work things out one-on-one is something really powerful,\ a Square spokesperson told The Verge. Square cant build a big business on top of these tiny margins, many have theorized, but Feedback, priced at $10 per month, operates on top of the credit card system. When I asked if Square would consider adding more new features as paid subscriptions, a Square spokesperson said \Yes, definitely.\ But perhaps not always.