Wall Street Journal: Nick Nadeau recently bought a hard drive through Walmart’s app—and got a bad feeling about its price.
On Nadeau’s phone, Walmart listed the drive for $369. On his wife’s phone, however, the drive cost $110 less.
“They are using cookies or stored data against me,” Nadeau, 38, a product manager at a technology company, thought. …
…A spokeswoman for Walmart said the prices varied because of an error that has been corrected, not because it used personal information to calibrate the price of a product…