Wine in the Stadium?

Today I went to watch the game between ( Chelsea x Bayer Leverkusen ) of the Champions League Cup and I saw something very interesting.
Before the game, I stopped at the bar of the Stadium and I bought a hot-dog. When I went to get a drink, what did I see? Wine!
On the price list I saw white wine and red in small bottles for £4,50 each. If I compare it to the supermarket here, it isn´t cheap. I payed £2,59 for a Rosso Puglia 2010. Anyway this is valid, I liked this idea, so I didn´t drink, because in the Champions League, alcohol is prohibited. Wine is only sold during the Premier League!

tin-tin

Edition: Evandro Silva