A YouGov survey reveals Costco is the top grocery store for higher-income Americans, but the reasons behind their warehouse club loyalty may surprise you.
Costco was the grocery retailer where the largest share of higher-income Americans reported doing most of their grocery shopping, according to a recent YouGov survey.
Eleven percent of respondents e… [+3850 chars]
Eleven percent of respondents e… [+3850 chars]