Enhancing Transparency of Airline Ancillary Service Fees: Regulatory Impact Analysis 4
process.”
7
In a simple model of drip pricing, a producer creates the favorable information
asymmetry by shrouding part of the price of a product.
8
Experimental research suggests that
consumers encountering drip pricing are more likely to make purchasing mistakes if they are
uncertain about the extent of the drip pricing.
9
The point during the purchase decision that the consumer acquires the information can also
affect decision-making. For example, when a grocery store included sales taxes in its advertised
prices as part of a field experiment, people purchased fewer products despite already being
aware of the sales taxes before the field experiment.
10
Producers could also use timing to create
an information advantage, as shown in research on drip pricing. One study found that
individuals are more likely to choose a lower-price airfare when all fees are disclosed up front
rather than revealed at points during the purchase process. Even when the participants became
aware of the additional fees, they were reluctant to restart the purchase process because they
perceived high search costs and inaccurately assumed that all companies charge the same
fees.
11
Asymmetric information could also have broader market effects, as shown in the literature on
asymmetric information and product quality.
12
A lack of consumer information can create
circumstances where low-quality or otherwise inefficient producers have a competitive
advantage. This advantage could lead to adverse selection, where high-quality producers exit
the market.
In sum, the basic model of information asymmetry favoring producers identifies two primary
effects that may occur when consumers make purchase decisions without full information. The
first effect is a deadweight loss or a reduction in social surplus due to overconsumption. When
7
Howard A. Shelanski, Joseph Farrell, Daniel Hanner, Christopher J. Metcalf, Mary W. Sullivan, and Brett W.
Wendling. 2012. “Economics at the FTC: Drug and PBM Mergers and Drip Pricing.” Review of Industrial
Organization 41: 303-319. https://doi.org/10.1007/s11151-012-9360-x
.
8
David Laibson. 2012. “Drip pricing: A behavioral economics perspective.” Presentation at Federal Trade
Commission, May 21, 2012.
https://www.ftc.gov/sites/default/files/documents/public_events/economics-
drip-pricing/dlaibson.pdf.
9
Alexander Rasch, Miriam Thöne, and Tobias Wenzel. 2020. “Drip pricing and its regulation: experimental
Evidence.” Journal of Economic Behavior & Organization 176: 353-370.
https://doi.org/10.1016/j.jebo.2020.04.007
.
10
Raj Chetty, Adam Looney, and Kory Kroft. 2009. “Salience and Taxation: Theory and Evidence.” American
Economic Review 99, no. 4: 1145-1177. https://doi.org/10.1257/aer.99.4.1145
.
11
Shelle Santana, Steven K. Dallas, Vicki G. Morwitz. 2020. “Consumer Reactions to Drip Pricing.”
Marketing Science 39(1): 188-210. https://doi.org/10.1287/mksc.2019.1207
.
12
George A. Akerlof. 1970. “The Market for ‘Lemons’: Quality Uncertainty and the Market Mechanism.”
Quarterly Journal of Economics 84(3): 488-500. https://doi.org/10.2307/1879431
.