Natalie and Bryan wish to thank Joanna Perry for getting the ball rolling and for her invaluable guidance in all matters technological. They also wish to express their gratitude to all past and present Walmart associates who contributed their insights and opinions, both on and off the record. Thanks also to the whole team at Kogan Page for their support.
Bryan wishes to thank Suzy for her support and editorial input and also Luca and Fynn for putting up with countless research trips to Asda.
Natalie wishes to thank Steve for coping with endless dinner chats about EDLP and range rationalization during their first year of marriage, and her Mom who has always been so supportive.