Contact

This book is published, but it's not yet finished. The companies analyzed are still experimenting. New studies are emerging. Readers are discovering details I've omitted. This page exists so that those details can be incorporated into the text.

If you know of any company that has published quantitative results from a price test, a retention experiment, a redesign of the testing process, or an improvement in the catalog architecture, and you believe the data is relevant to the discussion this book has initiated, please send the source to contact@upzal.com. I also accept reports of broken links, errors in information, and inaccurate citations at the same address.

The field of upselling architecture is built by many, and the same is true of this book: it improves thanks to the attention of its readers, and I appreciate that attention. If you'd like to contribute, please write to me.

Newsletter

For those who wish to stay informed about new cases or chapter revisions, the mailing list is the best option. It is not a newsletter. It does not contain tips, summaries, or promotional offers. I simply let you know what has changed in the book and why.

To subscribe, you can send an email to newsletter@upzal.com with the subject line "subscribe". That's all.

I will later publish a subscription form on the homepage. Inquiries, speaking engagement requests, and collaboration proposals are read and will be answered as soon as possible. My main commitment to this book is its expansion.

Sincerely,

— Fernando José Caicedo Albarello