I am providing this link as a public service.  You now can calculate your daily consumption rate and multiply by the pricing the link provides.  I am a bit curious, I never knew you could get lemonade?

The link has detail pricing per tent.


https://www.oktoberfest.de/en/article/Oktoberfest+2018/About+the+Oktoberfest/The+Official+2018+Beer+Prices/5086/

The Official 2018 Beer Prices

And there goes the 11€ mark.

The good news: Several lemonades didn't only stay at last year's price, but got even cheaper.
The bad news: In several beer tents, one liter of beer now costs you more than 11€.

The Mass (1 liter of beer) will cost you something between 10.70€ and 11.50€ this year. That is an average increase of 3.57% compared to last year’s beer prices. The cheapest beer can be found at the Museum Tent at the Old Wiesn and at the Ammer tent.

Whereas it is quite common that beer prices go up significantly each year, a novelty is prices of lemoades and Spezi going down in some tents.  
The tent proprietors explain this year's raise in prices because of the higher contingent rent for their tents. Because of increased security measures, the city of Munich had increased those rents last year.