It’s also illegal
You have a verbal legal contract where he has agreed the sale to you verbally
It’s legally binding in contact law
I doubt that, there was no "consideration".
In the words of Samuel Goldwyn "a verbal contract isn't worth the paper it is written on". But verbal or written, if nothing of value has changed hands then there isn't a contract at all.
I would take it up with the club though, it is bad form for the magazine.