Dec 21, 2011
Should Discounters Rethink Everyday Low Pricing?
When stores like Walmart, Sam’s Club and Costco began their rapid expansion in the 1990s, supermarkets were thrown for a loop. Their limited service, thinner assortments and “everyday low pricing” of grocery items created enormous cost savings and increased credibility with consumers. What was a Safeway or a Stop & Shop to do in the face of such brutal competition?
A new paper from the Stanford Graduate School of Business looks at the strategic pricing decisions made by grocery firms during that period in response to the shock to their local market positions by the entry of Walmart. The paper answers the age-old question in the supermarket industry: Is “everyday low pricing” better than promotional pricing that attempts to attract consumers through periodic sales on specific items?
Investigators find that while EDLP has lower fixed costs, promo pricing results in higher revenues, which is why it is the preferred marketing strategy of many stores.
The research is also the first to provide econometric evidence that repositioning firms’ marketing approaches can be quite costly. Switching from promo to EDLP is six times more expensive than migrating the other way around, which explains why supermarkets did not shift en masse to an everyday low pricing format as predicted when Walmart entered the game.
The unique data set from which the results were drawn covers revenue and price-format decisions for every single retail supermarket and Walmart in the United States from 1994 to 2000.
“You need a major event to cause a pricing strategy switch that can be observed, and the entry of Walmart into the grocery market provided that natural experiment,” said Harikesh Nair, associate professor of marketing at the business school and co-author of the study. The researchers exploited the observed switches in market structure in combination with an economic model of the industry to measure the cost and benefits to supermarkets of changing the price positioning.
Costs involved in changing pricing strategies included complex investments to educate (and advertise to) consumers about the legitimacy of the new positioning. For example, the Wegmans chain in New York produced a million videos explaining to customers the benefits of their switch to everyday low pricing. Repositioning costs also involved internal investments to overcome, such as resistance to change by managers within the firm and the need to rework channel relationships.
Running calculations on the data, Nair and his colleagues found that for the median store, promo pricing yielded $6.2 million more per year in revenues than an EDLP strategy. Moreover, changing from an EDLP to a promo strategy required only $2.6 million in costs over four years, while switching from a promo to an EDLP approach required outlays six times as large.
The debate over which strategy is better stems from the fact that EDLP seems to have its advantages. It enables retailers to reduce inventory costs, better coordinate supply chains and reduce the risk of stock shortages by smoothing the demand variability induced by frequent sales.
“Now we have empirical evidence to show why most stores chose promo pricing and stuck with it during a competitive shock –– it earns more revenues and is too expensive to change,” Nair said.
Analysis also revealed that the entry of Walmart resulted in a $1.7 million loss in annual revenues for the median incumbent EDLP supermarket, while it resulted in a loss of only $690,000 a year for the median promo store. “The entry of Walmart thus hurt EDLP stores by twice as much,” Nair noted. A promo strategy, then, proves more resilient to the entry of an undercutting presence as well.
In the late 2000s, Walmart began to do “selective rollbacks” on a large number of items, essentially putting them on sale. “Their strategy was a hybrid between EDLP and promo,” Nair said.
The result? Customers lost faith that Walmart prices were the lowest in town. “Now Walmart has incurred large repositioning costs to reassure customers of its original EDLP position,” Nair said.
The study offers a quantitative framework to evaluate repositioning decisions more generally. The authors also offer several lessons for supermarket retailers. “If revenues are what you care about, do promo pricing,” Nair advised. “If you’re a new entrant, be careful about your pricing strategy, because once you’re locked in, it’s difficult to reposition yourself.”
Finally, he said, “Price perception is really important. Customers’ sense of how you price merchandise drives foot traffic to your store and takes a long time to build up. Violations of that will be costly in terms of the loss of consumer trust and the expense it will take to re-educate them.”
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