I believe that it means "buy one, get one". In other words, you must bring another person with you in order to get any kind of a discount. Two for the price of one.
The way Winchester has deteriorated, that will be the only way Charlie Shaw will be able to put butts in the seats. Three shows all year.
What a disgrace in my opinion.
PS: Love how they haven't taken the time to even do anything with the website. Lead story is from 2012.