That same year, The Wall Street Journal (once again) reported that Staples.com showed higher prices to visitors who lived farther away from a competitor like Office Depot. And in 2015, the reporting outfit ProPublica revealed that customers in certain zip codes were shown higher prices for college test prep courses offered by The Princeton Review. This is surveillance pricing put into action. It is reportedly what caused some customers to see higher prices for televisions in the Target app when those customers were physically located in a Target parking lot. Video journalist Chris Parr, known on YouTube as Chris the Producer, ran a wild experiment into whether he could “stress-test” surveillance pricing.