Walmart stores vary by region.Michael Siluk/UCG/Universal Images Group via Getty ImagesI visited Walmart in Wisconsin and New Jersey to compare stores in the Midwest and the East Coast.Milk was less expensive in Wisconsin, but a dozen eggs cost the same at both locations.New Jersey's Walmart had a food hall startup, Wonder, founded by a former Walmart executive.As a Midwesterner who moved to New York City a decade ago, I still find myself surprised by regional differences in national brands.As part of an ongoing series comparing nationwide retailers in the Midwest and on the East Coast, I visited Walmart locations in Wisconsin and New Jersey to compare their prices, offerings, and store amenities.First, I visited a 200,000-square-foot Walmart store in Manitowoc, Wisconsin.The following week, I visited a Walmart in Teterboro, New Jersey, around 8 miles from Manhattan.