1. Junfei Bai (e‐mail: jfbai@cau.edu.cn) is Professor at the Beijing Food Safety Policy & Strategy Research Base/College of Economics and Management China Agricultural University Beijing 100083 China
2. James L. Seale is Professor at the Food and Resource Economics Department University of Florida Gainesville Florida 32611‐0240 USA
3. Thomas I. Wahl is Professor at the Department of Agribusiness and Applied Economics North Dakota State University Fargo North Dakota 58108‐6050 USA