He has a website but I would have a read of some reviews of the level of service and quality control you may receive if you decide to take a chance with Gustavo. Have a look at the thread which details my experience and many other similar stories posted on various shaving forums relating to Artesania Romera to give you an idea of what you could be in for. There are some positive stories but plenty of bad I'm afraid.
https://damnfineshave.com/thread-warning...sa-warning
https://damnfineshave.com/thread-warning...sa-warning