While I agree with your point, it gets lost when applied to Starbucks. There seems to be a groundswell of people who have suddenly realised that it's totally unreasonable to charge what they charge for a cup of coffee. The sheer ubiquity of Starbucks has also reduced their luxury allure. Might be nice to have a pretty receipt, but as far as Starbucks is concerned, they might want to reduce the font of the price and ensure it smudges easily.