Front and market data (front, chapters 6, 8, 10, 12)

• National Retail Federation and Happy Returns. “Consumers Expected to Return Nearly $850 Billion in Merchandise in 2025,” October 15, 2025. Summary of retailer fee findings: eMarketer, “Nearly three-quarters of retailers charge for at least some returns,” 2025.
• National Retail Federation and Happy Returns. “2024 Retail Returns to Total $890 Billion,” December 2024. eMarketer, “Return fees push consumers to adopt free methods, reduce returns,” on the September 2024 survey.
• Appriss Retail. Benchmark report press release, February 19, 2026.
• Loop Returns. 2026 Global Ecommerce Report: Retention Benchmarks, covering November 2024 to October 2025.
• Narvar. “Return Fees Are Costing You Loyal Shoppers,” September 8, 2026.

The value of a return and lenient policies (chapters 2, 3, 10)

• J. Andrew Petersen and V. Kumar. “Are Product Returns a Necessary Evil? Antecedents and Consequences.” Journal of Marketing 73(3), 2009, 35–51.
• J. Andrew Petersen and V. Kumar. “Can Product Returns Make You Money?” MIT Sloan Management Review 51(3), Spring 2010.
• J. Andrew Petersen and V. Kumar. “Perceived Risk, Product Returns, and Optimal Resource Allocation: Evidence from a Field Experiment.” Journal of Marketing Research 52(2), 2015, 268–285.
• Amanda B. Bower and James G. Maxham III. “Return Shipping Policies of Online Retailers: Normative Assumptions and the Long-Term Consequences of Fee and Free Returns.” Journal of Marketing 76(5), 2012, 110–124. Press summary, October 2012.
• Narayan Janakiraman, Holly A. Syrdal and Ryan Freling. “The Effect of Return Policy Leniency on Consumer Purchase and Return Decisions: A Meta-analytic Review.” Journal of Retailing 92(2), 2016, 226–235.
• Eric T. Anderson, Karsten Hansen and Duncan Simester. “The Option Value of Returns: Theory and Empirical Evidence.” Marketing Science 28(3), 2009, 405–423.
• Stanley E. Griffis, Shashank Rao, Thomas J. Goldsby and Tarikere T. Niranjan. “The customer consequences of returns in online retailing: An empirical analysis.” Journal of Operations Management 30(4), 2012, 282–294.
• Haleluya Hadero, Associated Press. “Many retailers offer returnless refunds. Just don’t expect them to talk much about it,” November 4, 2024, via PBS NewsHour.
• Alec Minnema, Tammo H.A. Bijmolt, Sonja Gensler and Thorsten Wiesel. “To Keep or Not to Keep: Effects of Online Customer Reviews on Product Returns.” Journal of Retailing 92(3), 2016, 253–267.
• Edlira Shehu, Dominik Papies and Scott A. Neslin. “Free Shipping Promotions and Product Returns.” Journal of Marketing Research 57(4), 2020, 640–658.
• Revolve Group. Fourth quarter and full year 2024 prepared remarks, February 25, 2025.

The trip (chapters 4, 6 to 9)

• The Wall Street Journal. “Amazon, Walmart Tell Consumers to Skip Returns of Unwanted Items.” January 2021; excerpted by Slashdot, January 11, 2021.
• Francisco J. Martínez-López, Changyuan Feng, Yangchun Li and David López-López. “Using instant refunds to improve online return experiences.” Journal of Retailing and Consumer Services 68, 2022.
• Somayeh Torkaman, Sarah Gelper, Nevin Mutlu and Tom Van Woensel. “From return to exchange: The value of an omni-channel journey.” Production and Operations Management, 2026, online first.
• Patagonia. Worn Wear, read September 2026.

Serial returners and fees (chapters 11, 12)

• InternetRetailing. “Asos to charge high returners £3.95 fee,” September 6, 2024. Which?, “Asos updates returns policy with new ‘personal return rate’ tool,” January 7, 2026. ASOS, fair use policy, read September 2026.
• CBS News. “Planning to return unwanted Christmas gifts? You may be charged fees,” December 26, 2025. TheStreet, holiday return policies, December 21, 2025, via Yahoo Finance.
• CNN. “Amazon will charge customers a fee for some UPS returns,” April 12, 2023.
• Bangor Daily News (Associated Press). “Citing fraud, LL Bean drops its unlimited return policy,” February 9, 2018. Fortune, on the lawsuit, February 14, 2018.

Law (chapter 13)

• Directive 2011/83/EU on consumer rights, Articles 9, 10, 13, 14 and 16.
• Directive (EU) 2023/2673, inserting Article 11a (withdrawal function) into Directive 2011/83/EU; transposition by December 19, 2025, applying from June 19, 2026.
• The Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013, regulation 30.
• Federal Trade Commission. Guides for the Advertising of Warranties and Guarantees, 16 CFR Part 239. Rule on unfair or deceptive fees, announced December 17, 2024.
• New York General Business Law § 218-a. California Civil Code § 1723.